protobufjs

protobufjs

Version 7.4.0
Published 3 months ago
2.77 MB
12 dependencies
BSD-3-Clause license

Install

npm i protobufjs

yarn add protobufjs

pnpm add protobufjs

Overview

Protocol Buffers for JavaScript (& TypeScript).

Index

Variables

variable build

const build: string;

Build type, one of "full", "light" or "minimal".

variable roots

let roots: { [k: string]: Root };

Named roots. This is where pbjs stores generated structures (the option -r, --root specifies a name). Can also be used manually to make roots available across modules.

variable wrappers

const wrappers: { [k: string]: IWrapper };

Wrappers for common types.

Functions

function common

common: typeof common;

Provides common type definitions. Can also be used to provide additional google types or your own custom types.
Parameter name
Short name as in google/protobuf/[name].proto or full file name
Parameter json
JSON definition within google.protobuf if a short name, otherwise the file's root definition

function configure

configure: () => void;

Reconfigures the library according to the environment.

function decoder

decoder: (mtype: Type) => Codegen;

Generates a decoder specific to the specified message type.
Parameter mtype
Message type
Returns
Codegen instance

function encoder

encoder: (mtype: Type) => Codegen;

Generates an encoder specific to the specified message type.
Parameter mtype
Message type
Returns
Codegen instance

function load

load: {
    (filename: string | string[], root: Root, callback: LoadCallback): void;
    (filename: string | string[], callback: LoadCallback): void;
    (filename: string | string[], root?: Root): Promise<Root>;
};

Loads one or multiple .proto or preprocessed .json files into a common root namespace and calls the callback.
Parameter filename
One or multiple files to load
Parameter root
Root namespace, defaults to create a new one if omitted.
Parameter callback
Callback function
See Also
- Root#load
Loads one or multiple .proto or preprocessed .json files into a common root namespace and calls the callback.
Parameter filename
One or multiple files to load
Parameter callback
Callback function
See Also
- Root#load
Loads one or multiple .proto or preprocessed .json files into a common root namespace and returns a promise.
Parameter filename
One or multiple files to load
Parameter root
Root namespace, defaults to create a new one if omitted.
Returns
Promise
See Also
- Root#load

function loadSync

loadSync: (filename: string | string[], root?: Root) => Root;

Synchronously loads one or multiple .proto or preprocessed .json files into a common root namespace (node only).
Parameter filename
One or multiple files to load
Parameter root
Root namespace, defaults to create a new one if omitted.
Returns
Root namespace
Throws
{Error} If synchronous fetching is not supported (i.e. in browsers) or if a file's syntax is invalid
See Also
- Root#loadSync

function parse

parse: {
    (source: string, options?: IParseOptions): IParserResult;
    (source: string, root: Root, options?: IParseOptions): IParserResult;
};

Parses the given .proto source and returns an object with the parsed contents.
Parameter source
Source contents
Parameter options
Parse options. Defaults to parse.defaults when omitted.
Returns
Parser result
Parses the given .proto source and returns an object with the parsed contents.
Parameter source
Source contents
Parameter root
Root to populate
Parameter options
Parse options. Defaults to parse.defaults when omitted.
Returns
Parser result

function tokenize

tokenize: typeof tokenize;

Tokenizes the given .proto source and returns an object with useful utility functions.
Parameter source
Source contents
Parameter alternateCommentMode
Whether we should activate alternate comment parsing mode.
Returns
Tokenizer handle

function verifier

verifier: (mtype: Type) => Codegen;

Generates a verifier specific to the specified message type.
Parameter mtype
Message type
Returns
Codegen instance

Classes

class BufferReader

class BufferReader extends Reader {}

Wire format reader using node buffers.

constructor

constructor(buffer: Buffer);

Constructs a new buffer reader instance.
Parameter buffer
Buffer to read from

method bytes

bytes: () => Buffer;

Reads a sequence of bytes preceeded by its length as a varint.
Returns
Value read

class BufferWriter

class BufferWriter extends Writer {}

Wire format writer using node buffers.

constructor

constructor();

Constructs a new buffer writer instance.

method alloc

static alloc: (size: number) => Buffer;

Allocates a buffer of the specified size.
Parameter size
Buffer size
Returns
Buffer

method finish

finish: () => Buffer;

Finishes the write operation.
Returns
Finished buffer

class Enum

class Enum extends ReflectionObject {}

Reflected enum.

constructor

constructor(
    name: string,
    values?: { [k: string]: number },
    options?: { [k: string]: any },
    comment?: string,
    comments?: { [k: string]: string },
    valuesOptions?: { [k: string]: { [k: string]: any } }
);

Constructs a new enum instance.
Parameter name
Unique name within its namespace
Parameter values
Enum values as an object, by name
Parameter options
Declared options
Parameter comment
The comment for this enum
Parameter comments
The value comments for this enum
Parameter valuesOptions
The value options for this enum

property comment

comment: string;

Enum comment text.

property comments

comments: { [k: string]: string };

Value comment texts, if any.

property reserved

reserved: (string | number[])[];

Reserved ranges, if any.

property values

values: { [k: string]: number };

Enum values by name.

property valuesById

valuesById: { [k: number]: string };

Enum values by id.

property valuesOptions

valuesOptions?: { [k: string]: { [k: string]: any } };

Values options, if any

method add

add: (
    name: string,
    id: number,
    comment?: string,
    options?: { [k: string]: any }
) => Enum;

Adds a value to this enum.
Parameter name
Value name
Parameter id
Value id
Parameter comment
Comment, if any
Parameter options
Options, if any
Returns
this
Throws
{TypeError} If arguments are invalid
Throws
{Error} If there is already a value with this name or id

method fromJSON

static fromJSON: (name: string, json: IEnum) => Enum;

Constructs an enum from an enum descriptor.
Parameter name
Enum name
Parameter json
Enum descriptor
Returns
Created enum
Throws
{TypeError} If arguments are invalid

method isReservedId

isReservedId: (id: number) => boolean;

Tests if the specified id is reserved.
Parameter id
Id to test
Returns
true if reserved, otherwise false

method isReservedName

isReservedName: (name: string) => boolean;

Tests if the specified name is reserved.
Parameter name
Name to test
Returns
true if reserved, otherwise false

method remove

remove: (name: string) => Enum;

Removes a value from this enum
Parameter name
Value name
Returns
this
Throws
{TypeError} If arguments are invalid
Throws
{Error} If name is not a name of this enum

method toJSON

toJSON: (toJSONOptions?: IToJSONOptions) => IEnum;

Converts this enum to an enum descriptor.
Parameter toJSONOptions
JSON conversion options
Returns
Enum descriptor

class Field

class Field extends FieldBase {}

Reflected message field.

constructor

constructor(
    name: string,
    id: number,
    type: string,
    rule?: string | { [k: string]: any },
    extend?: string | { [k: string]: any },
    options?: { [k: string]: any }
);

Constructs a new message field instance. Note that map fields have their own class.
Parameter name
Unique name within its namespace
Parameter id
Unique id within its namespace
Parameter type
Value type
Parameter rule
Field rule
Parameter extend
Extended type if different from parent
Parameter options
Declared options

property packed

readonly packed: boolean;

Determines whether this field is packed. Only relevant when repeated and working with proto2.

method d

static d: {
    <
        T extends
            | string
            | number
            | boolean
            | Uint8Array
            | Long
            | string[]
            | number[]
            | Long[]
            | boolean[]
            | Uint8Array[]
            | Buffer
            | Buffer[]
    >(
        fieldId: number,
        fieldType:
            | 'double'
            | 'float'
            | 'int32'
            | 'uint32'
            | 'sint32'
            | 'fixed32'
            | 'sfixed32'
            | 'int64'
            | 'uint64'
            | 'sint64'
            | 'fixed64'
            | 'sfixed64'
            | 'string'
            | 'bool'
            | 'bytes'
            | object,
        fieldRule?: 'optional' | 'required' | 'repeated',
        defaultValue?: T
    ): FieldDecorator;
    <T extends Message<T>>(
        fieldId: number,
        fieldType: string | Constructor<T>,
        fieldRule?: 'optional' | 'required' | 'repeated'
    ): FieldDecorator;
};

Field decorator (TypeScript).
Parameter fieldId
Field id
Parameter fieldType
Field type
Parameter fieldRule
Field rule
Parameter defaultValue
Default value
Returns
Decorator function
Field decorator (TypeScript).
Parameter fieldId
Field id
Parameter fieldType
Field type
Parameter fieldRule
Field rule
Returns
Decorator function

method fromJSON

static fromJSON: (name: string, json: IField) => Field;

Constructs a field from a field descriptor.
Parameter name
Field name
Parameter json
Field descriptor
Returns
Created field
Throws
{TypeError} If arguments are invalid

class FieldBase

class FieldBase extends ReflectionObject {}

Base class of all reflected message fields. This is not an actual class but here for the sake of having consistent type definitions.

constructor

constructor(
    name: string,
    id: number,
    type: string,
    rule?: string | { [k: string]: any },
    extend?: string | { [k: string]: any },
    options?: { [k: string]: any },
    comment?: string
);

Not an actual constructor. Use Field instead.
Parameter name
Unique name within its namespace
Parameter id
Unique id within its namespace
Parameter type
Value type
Parameter rule
Field rule
Parameter extend
Extended type if different from parent
Parameter options
Declared options
Parameter comment
Comment associated with this field

property bytes

bytes: boolean;

Whether this field's value is a buffer.

property comment

comment: string;

Comment for this field.

property declaringField

declaringField: Field;

Sister-field within the declaring namespace if an extended field.

property defaultValue

defaultValue: any;

The field's default value on prototypes.

property extend

extend?: string;

Extended type if different from parent.

property extensionField

extensionField: Field;

Sister-field within the extended type if a declaring extension field.

property id

id: number;

Unique field id.

property long

long: boolean;

Whether this field's value should be treated as a long.

property map

map: boolean;

Whether this field is a map or not.

property message

message: Type;

Message this field belongs to.

property optional

optional: boolean;

Whether this field is optional.

property partOf

partOf: OneOf;

OneOf this field belongs to, if any,

property repeated

repeated: boolean;

Whether this field is repeated.

property required

required: boolean;

Whether this field is required.

property resolvedType

resolvedType: Type | Enum;

Resolved type if not a basic type.

property type

type: string;

Field type.

property typeDefault

typeDefault: any;

The field type's default value.

method resolve

resolve: () => Field;

Resolves this field's type references.
Returns
this
Throws
{Error} If any reference cannot be resolved

method toJSON

toJSON: (toJSONOptions?: IToJSONOptions) => IField;

Converts this field to a field descriptor.
Parameter toJSONOptions
JSON conversion options
Returns
Field descriptor

class MapField

class MapField extends FieldBase {}

Reflected map field.

constructor

constructor(
    name: string,
    id: number,
    keyType: string,
    type: string,
    options?: { [k: string]: any },
    comment?: string
);

Constructs a new map field instance.
Parameter name
Unique name within its namespace
Parameter id
Unique id within its namespace
Parameter keyType
Key type
Parameter type
Value type
Parameter options
Declared options
Parameter comment
Comment associated with this field

property keyType

keyType: string;

Key type.

property resolvedKeyType

resolvedKeyType: ReflectionObject;

Resolved key type if not a basic type.

method d

static d: <
    T extends {
        [key: string]:
            | string
            | number
            | boolean
            | Uint8Array
            | Long
            | number[]
            | Buffer
            | Message<{}>;
    }
>(
    fieldId: number,
    fieldKeyType:
        | 'int32'
        | 'uint32'
        | 'sint32'
        | 'fixed32'
        | 'sfixed32'
        | 'int64'
        | 'uint64'
        | 'sint64'
        | 'fixed64'
        | 'sfixed64'
        | 'bool'
        | 'string',
    fieldValueType:
        | 'double'
        | 'float'
        | 'int32'
        | 'uint32'
        | 'sint32'
        | 'fixed32'
        | 'sfixed32'
        | 'int64'
        | 'uint64'
        | 'sint64'
        | 'fixed64'
        | 'sfixed64'
        | 'bool'
        | 'string'
        | 'bytes'
        | object
        | Constructor<{}>
) => FieldDecorator;

Map field decorator (TypeScript).
Parameter fieldId
Field id
Parameter fieldKeyType
Field key type
Parameter fieldValueType
Field value type
Returns
Decorator function

method fromJSON

static fromJSON: (name: string, json: IMapField) => MapField;

Constructs a map field from a map field descriptor.
Parameter name
Field name
Parameter json
Map field descriptor
Returns
Created map field
Throws
{TypeError} If arguments are invalid

method toJSON

toJSON: (toJSONOptions?: IToJSONOptions) => IMapField;

Converts this map field to a map field descriptor.
Parameter toJSONOptions
JSON conversion options
Returns
Map field descriptor

class Message

class Message<T extends object = object> {}

Abstract runtime message.

constructor

constructor(properties?: Properties<T>);

Constructs a new message instance.
Parameter properties
Properties to set

property $type

static readonly $type: Type;

Reference to the reflected type.

property $type

readonly $type: Type;

Reference to the reflected type.

method create

static create: <T extends Message<T>>(
    this: Constructor<T>,
    properties?: { [k: string]: any }
) => Message<T>;

Creates a new message of this type using the specified properties.
Parameter properties
Properties to set
Returns
Message instance

method decode

static decode: <T extends Message<T>>(
    this: Constructor<T>,
    reader: Reader | Uint8Array
) => T;

Decodes a message of this type.
Parameter reader
Reader or buffer to decode
Returns
Decoded message

method decodeDelimited

static decodeDelimited: <T extends Message<T>>(
    this: Constructor<T>,
    reader: Reader | Uint8Array
) => T;

Decodes a message of this type preceeded by its length as a varint.
Parameter reader
Reader or buffer to decode
Returns
Decoded message

method encode

static encode: <T extends Message<T>>(
    this: Constructor<T>,
    message: T | { [k: string]: any },
    writer?: Writer
) => Writer;

Encodes a message of this type.
Parameter message
Message to encode
Parameter writer
Writer to use
Returns
Writer

method encodeDelimited

static encodeDelimited: <T extends Message<T>>(
    this: Constructor<T>,
    message: T | { [k: string]: any },
    writer?: Writer
) => Writer;

Encodes a message of this type preceeded by its length as a varint.
Parameter message
Message to encode
Parameter writer
Writer to use
Returns
Writer

method fromObject

static fromObject: <T extends Message<T>>(
    this: Constructor<T>,
    object: { [k: string]: any }
) => T;

Creates a new message of this type from a plain object. Also converts values to their respective internal types.
Parameter object
Plain object
Returns
Message instance

method toJSON

toJSON: () => { [k: string]: any };

Converts this message to JSON.
Returns
JSON object

method toObject

static toObject: <T extends Message<T>>(
    this: Constructor<T>,
    message: T,
    options?: IConversionOptions
) => { [k: string]: any };

Creates a plain object from a message of this type. Also converts values to other types if specified.
Parameter message
Message instance
Parameter options
Conversion options
Returns
Plain object

method verify

static verify: (message: { [k: string]: any }) => string | null;

Verifies a message of this type.
Parameter message
Plain object to verify
Returns
null if valid, otherwise the reason why it is not

class Method

class Method extends ReflectionObject {}

Reflected service method.

constructor

constructor(
    name: string,
    type: string,
    requestType: string,
    responseType: string,
    requestStream?: boolean | { [k: string]: any },
    responseStream?: boolean | { [k: string]: any },
    options?: { [k: string]: any },
    comment?: string,
    parsedOptions?: { [k: string]: any }
);

Constructs a new service method instance.
Parameter name
Method name
Parameter type
Method type, usually "rpc"
Parameter requestType
Request message type
Parameter responseType
Response message type
Parameter requestStream
Whether the request is streamed
Parameter responseStream
Whether the response is streamed
Parameter options
Declared options
Parameter comment
The comment for this method
Parameter parsedOptions
Declared options, properly parsed into an object

property comment

comment: string;

Comment for this method

property parsedOptions

parsedOptions: any;

Options properly parsed into an object

property requestStream

requestStream?: boolean;

Whether requests are streamed or not.

property requestType

requestType: string;

Request type.

property resolvedRequestType

resolvedRequestType: Type;

Resolved request type.

property resolvedResponseType

resolvedResponseType: Type;

Resolved response type.

property responseStream

responseStream?: boolean;

Whether responses are streamed or not.

property responseType

responseType: string;

Response type.

property type

type: string;

Method type.

method fromJSON

static fromJSON: (name: string, json: IMethod) => Method;

Constructs a method from a method descriptor.
Parameter name
Method name
Parameter json
Method descriptor
Returns
Created method
Throws
{TypeError} If arguments are invalid

method toJSON

toJSON: (toJSONOptions?: IToJSONOptions) => IMethod;

Converts this method to a method descriptor.
Parameter toJSONOptions
JSON conversion options
Returns
Method descriptor

class Namespace

class Namespace extends NamespaceBase {}

Reflected namespace.

constructor

constructor(name: string, options?: { [k: string]: any });

Constructs a new namespace instance.
Parameter name
Namespace name
Parameter options
Declared options

method arrayToJSON

static arrayToJSON: (
    array: ReflectionObject[],
    toJSONOptions?: IToJSONOptions
) => { [k: string]: any };

Converts an array of reflection objects to JSON.
Parameter array
Object array
Parameter toJSONOptions
JSON conversion options
Returns
JSON object or undefined when array is empty

method fromJSON

static fromJSON: (name: string, json: { [k: string]: any }) => Namespace;

Constructs a namespace from JSON.
Parameter name
Namespace name
Parameter json
JSON object
Returns
Created namespace
Throws
{TypeError} If arguments are invalid

method isReservedId

static isReservedId: (
    reserved: (number[] | string)[] | undefined,
    id: number
) => boolean;

Tests if the specified id is reserved.
Parameter reserved
Array of reserved ranges and names
Parameter id
Id to test
Returns
true if reserved, otherwise false

method isReservedName

static isReservedName: (
    reserved: (number[] | string)[] | undefined,
    name: string
) => boolean;

Tests if the specified name is reserved.
Parameter reserved
Array of reserved ranges and names
Parameter name
Name to test
Returns
true if reserved, otherwise false

class NamespaceBase

abstract class NamespaceBase extends ReflectionObject {}

Base class of all reflection objects containing nested objects. This is not an actual class but here for the sake of having consistent type definitions.

property nested

nested?: { [k: string]: ReflectionObject };

Nested objects by name.

property nestedArray

readonly nestedArray: ReflectionObject[];

Nested objects of this namespace as an array for iteration.

method add

add: (object: ReflectionObject) => Namespace;

Adds a nested object to this namespace.
Parameter object
Nested object to add
Returns
this
Throws
{TypeError} If arguments are invalid
Throws
{Error} If there is already a nested object with this name

method addJSON

addJSON: (nestedJson: { [k: string]: AnyNestedObject }) => Namespace;

Adds nested objects to this namespace from nested object descriptors.
Parameter nestedJson
Any nested object descriptors
Returns
this

method define

define: (path: string | string[], json?: any) => Namespace;

Defines additial namespaces within this one if not yet existing.
Parameter path
Path to create
Parameter json
Nested types to create from JSON
Returns
Pointer to the last namespace created or this if path is empty

method get

get: (name: string) => ReflectionObject | null;

Gets the nested object of the specified name.
Parameter name
Nested object name
Returns
The reflection object or null if it doesn't exist

method getEnum

getEnum: (name: string) => { [k: string]: number };

Gets the values of the nested enum of the specified name. This methods differs from get in that it returns an enum's values directly and throws instead of returning null.
Parameter name
Nested enum name
Returns
Enum values
Throws
{Error} If there is no such enum

method lookup

lookup: {
    (
        path: string | string[],
        filterTypes: any | any[],
        parentAlreadyChecked?: boolean
    ): ReflectionObject | null;
    (path: string | string[], parentAlreadyChecked?: boolean): ReflectionObject;
};

Recursively looks up the reflection object matching the specified path in the scope of this namespace.
Parameter path
Path to look up
Parameter filterTypes
Filter types, any combination of the constructors of protobuf.Type, protobuf.Enum, protobuf.Service etc.
Parameter parentAlreadyChecked
If known, whether the parent has already been checked
Returns
Looked up object or null if none could be found
Looks up the reflection object at the specified path, relative to this namespace.
Parameter path
Path to look up
Parameter parentAlreadyChecked
Whether the parent has already been checked
Returns
Looked up object or null if none could be found

method lookupEnum

lookupEnum: (path: string | string[]) => Enum;

Looks up the values of the enum at the specified path, relative to this namespace. Besides its signature, this methods differs from lookup in that it throws instead of returning null.
Parameter path
Path to look up
Returns
Looked up enum
Throws
{Error} If path does not point to an enum

method lookupService

lookupService: (path: string | string[]) => Service;

Looks up the service at the specified path, relative to this namespace. Besides its signature, this methods differs from lookup in that it throws instead of returning null.
Parameter path
Path to look up
Returns
Looked up service
Throws
{Error} If path does not point to a service

method lookupType

lookupType: (path: string | string[]) => Type;

Looks up the type at the specified path, relative to this namespace. Besides its signature, this methods differs from lookup in that it throws instead of returning null.
Parameter path
Path to look up
Returns
Looked up type
Throws
{Error} If path does not point to a type

method lookupTypeOrEnum

lookupTypeOrEnum: (path: string | string[]) => Type;

Looks up the type or enum at the specified path, relative to this namespace. Besides its signature, this methods differs from lookup in that it throws instead of returning null.
Parameter path
Path to look up
Returns
Looked up type or enum
Throws
{Error} If path does not point to a type or enum

method remove

remove: (object: ReflectionObject) => Namespace;

Removes a nested object from this namespace.
Parameter object
Nested object to remove
Returns
this
Throws
{TypeError} If arguments are invalid
Throws
{Error} If object is not a member of this namespace

method resolveAll

resolveAll: () => Namespace;

Resolves this namespace's and all its nested objects' type references. Useful to validate a reflection tree, but comes at a cost.
Returns
this

method toJSON

toJSON: (toJSONOptions?: IToJSONOptions) => INamespace;

Converts this namespace to a namespace descriptor.
Parameter toJSONOptions
JSON conversion options
Returns
Namespace descriptor

class OneOf

class OneOf extends ReflectionObject {}

Reflected oneof.

constructor

constructor(
    name: string,
    fieldNames?: string[] | { [k: string]: any },
    options?: { [k: string]: any },
    comment?: string
);

Constructs a new oneof instance.
Parameter name
Oneof name
Parameter fieldNames
Field names
Parameter options
Declared options
Parameter comment
Comment associated with this field

property comment

comment: string;

Comment for this field.

property fieldsArray

readonly fieldsArray: Field[];

Fields that belong to this oneof as an array for iteration.

property oneof

oneof: string[];

Field names that belong to this oneof.

method add

add: (field: Field) => OneOf;

Adds a field to this oneof and removes it from its current parent, if any.
Parameter field
Field to add
Returns
this

method d

static d: <T extends string>(...fieldNames: string[]) => OneOfDecorator;

OneOf decorator (TypeScript).
Parameter fieldNames
Field names
Returns
Decorator function

method fromJSON

static fromJSON: (name: string, json: IOneOf) => OneOf;

Constructs a oneof from a oneof descriptor.
Parameter name
Oneof name
Parameter json
Oneof descriptor
Returns
Created oneof
Throws
{TypeError} If arguments are invalid

method remove

remove: (field: Field) => OneOf;

Removes a field from this oneof and puts it back to the oneof's parent.
Parameter field
Field to remove
Returns
this

method toJSON

toJSON: (toJSONOptions?: IToJSONOptions) => IOneOf;

Converts this oneof to a oneof descriptor.
Parameter toJSONOptions
JSON conversion options
Returns
Oneof descriptor

class Reader

class Reader {}

Wire format reader using Uint8Array if available, otherwise Array.

constructor

constructor(buffer: Uint8Array);

Constructs a new reader instance using the specified buffer.
Parameter buffer
Buffer to read from

property buf

buf: Uint8Array;

Read buffer.

property len

len: number;

Read buffer length.

property pos

pos: number;

Read buffer position.

method bool

bool: () => boolean;

Reads a varint as a boolean.
Returns
Value read

method bytes

bytes: () => Uint8Array;

Reads a sequence of bytes preceeded by its length as a varint.
Returns
Value read

method create

static create: (buffer: Uint8Array | Buffer) => Reader | BufferReader;

Creates a new reader using the specified buffer.
Parameter buffer
Buffer to read from
Returns
A BufferReader if buffer is a Buffer, otherwise a Reader
Throws
{Error} If buffer is not a valid buffer

method double

double: () => number;

Reads a double (64 bit float) as a number.
Returns
Value read

method fixed32

fixed32: () => number;

Reads fixed 32 bits as an unsigned 32 bit integer.
Returns
Value read

method fixed64

fixed64: () => Long;

Reads fixed 64 bits.
Returns
Value read

method float

float: () => number;

Reads a float (32 bit) as a number.
Returns
Value read

method int32

int32: () => number;

Reads a varint as a signed 32 bit value.
Returns
Value read

method int64

int64: () => Long;

Reads a varint as a signed 64 bit value.
Returns
Value read

method sfixed32

sfixed32: () => number;

Reads fixed 32 bits as a signed 32 bit integer.
Returns
Value read

method sfixed64

sfixed64: () => Long;

Reads zig-zag encoded fixed 64 bits.
Returns
Value read

method sint32

sint32: () => number;

Reads a zig-zag encoded varint as a signed 32 bit value.
Returns
Value read

method sint64

sint64: () => Long;

Reads a zig-zag encoded varint as a signed 64 bit value.
Returns
Value read

method skip

skip: (length?: number) => Reader;

Skips the specified number of bytes if specified, otherwise skips a varint.
Parameter length
Length if known, otherwise a varint is assumed
Returns
this

method skipType

skipType: (wireType: number) => Reader;

Skips the next element of the specified wire type.
Parameter wireType
Wire type received
Returns
this

method string

string: () => string;

Reads a string preceeded by its byte length as a varint.
Returns
Value read

method uint32

uint32: () => number;

Reads a varint as an unsigned 32 bit value.
Returns
Value read

method uint64

uint64: () => Long;

Reads a varint as an unsigned 64 bit value.
Returns
Value read

class ReflectionObject

abstract class ReflectionObject {}

Base class of all reflection objects.

property comment

comment: string;

Comment text, if any.

property filename

filename: string;

Defining file name.

property fullName

readonly fullName: string;

Full name including leading dot.

property name

name: string;

Unique name within its namespace.

property options

options?: { [k: string]: any };

Options.

property parent

parent: Namespace;

Parent namespace.

property parsedOptions

parsedOptions?: { [k: string]: any[] };

Parsed Options.

property resolved

resolved: boolean;

Whether already resolved or not.

property root

readonly root: Root;

Reference to the root namespace.

method getOption

getOption: (name: string) => any;

Gets an option value.
Parameter name
Option name
Returns
Option value or undefined if not set

method onAdd

onAdd: (parent: ReflectionObject) => void;

Called when this object is added to a parent.
Parameter parent
Parent added to

method onRemove

onRemove: (parent: ReflectionObject) => void;

Called when this object is removed from a parent.
Parameter parent
Parent removed from

method resolve

resolve: () => ReflectionObject;

Resolves this objects type references.
Returns
this

method setOption

setOption: (name: string, value: any, ifNotSet?: boolean) => ReflectionObject;

Sets an option.
Parameter name
Option name
Parameter value
Option value
Parameter ifNotSet
Sets the option only if it isn't currently set
Returns
this

method setOptions

setOptions: (
    options: { [k: string]: any },
    ifNotSet?: boolean
) => ReflectionObject;

Sets multiple options.
Parameter options
Options to set
Parameter ifNotSet
Sets an option only if it isn't currently set
Returns
this

method setParsedOption

setParsedOption: (
    name: string,
    value: any,
    propName: string
) => ReflectionObject;

Sets a parsed option.
Parameter name
parsed Option name
Parameter value
Option value
Parameter propName
dot '.' delimited full path of property within the option to set. if undefined\empty, will add a new option with that value
Returns
this

method toJSON

toJSON: () => { [k: string]: any };

Converts this reflection object to its descriptor representation.
Returns
Descriptor

method toString

toString: () => string;

Converts this instance to its string representation.
Returns
Class name[, space, full name]

class Root

class Root extends NamespaceBase {}

Root namespace wrapping all types, enums, services, sub-namespaces etc. that belong together.

constructor

constructor(options?: { [k: string]: any });

Constructs a new root namespace instance.
Parameter options
Top level options

property deferred

deferred: Field[];

Deferred extension fields.

property files

files: string[];

Resolved file names of loaded files.

method fetch

fetch: (path: string, callback: FetchCallback) => void;

Fetch content from file path or url This method exists so you can override it with your own logic.
Parameter path
File path or url
Parameter callback
Callback function

method fromJSON

static fromJSON: (json: INamespace, root?: Root) => Root;

Loads a namespace descriptor into a root namespace.
Parameter json
Nameespace descriptor
Parameter root
Root namespace, defaults to create a new one if omitted
Returns
Root namespace

method load

load: {
    (
        filename: string | string[],
        options: IParseOptions,
        callback: LoadCallback
    ): void;
    (filename: string | string[], callback: LoadCallback): void;
    (filename: string | string[], options?: IParseOptions): Promise<Root>;
};

Loads one or multiple .proto or preprocessed .json files into this root namespace and calls the callback.
Parameter filename
Names of one or multiple files to load
Parameter options
Parse options
Parameter callback
Callback function
Loads one or multiple .proto or preprocessed .json files into this root namespace and calls the callback.
Parameter filename
Names of one or multiple files to load
Parameter callback
Callback function
Loads one or multiple .proto or preprocessed .json files into this root namespace and returns a promise.
Parameter filename
Names of one or multiple files to load
Parameter options
Parse options. Defaults to parse.defaults when omitted.
Returns
Promise

method loadSync

loadSync: (filename: string | string[], options?: IParseOptions) => Root;

Synchronously loads one or multiple .proto or preprocessed .json files into this root namespace (node only).
Parameter filename
Names of one or multiple files to load
Parameter options
Parse options. Defaults to parse.defaults when omitted.
Returns
Root namespace
Throws
{Error} If synchronous fetching is not supported (i.e. in browsers) or if a file's syntax is invalid

method resolvePath

resolvePath: (origin: string, target: string) => string | null;

Resolves the path of an imported file, relative to the importing origin. This method exists so you can override it with your own logic in case your imports are scattered over multiple directories.
Parameter origin
The file name of the importing file
Parameter target
The file name being imported
Returns
Resolved path to target or null to skip the file

class Service

class Service extends NamespaceBase {}

Reflected service.

constructor

constructor(name: string, options?: { [k: string]: any });

Constructs a new service instance.
Parameter name
Service name
Parameter options
Service options
Throws
{TypeError} If arguments are invalid

property methods

methods: { [k: string]: Method };

Service methods.

property methodsArray

readonly methodsArray: Method[];

Methods of this service as an array for iteration.

method create

create: (
    rpcImpl: RPCImpl,
    requestDelimited?: boolean,
    responseDelimited?: boolean
) => rpc.Service;

Creates a runtime service using the specified rpc implementation.
Parameter rpcImpl
RPC implementation
Parameter requestDelimited
Whether requests are length-delimited
Parameter responseDelimited
Whether responses are length-delimited
Returns
RPC service. Useful where requests and/or responses are streamed.

method fromJSON

static fromJSON: (name: string, json: IService) => Service;

Constructs a service from a service descriptor.
Parameter name
Service name
Parameter json
Service descriptor
Returns
Created service
Throws
{TypeError} If arguments are invalid

method toJSON

toJSON: (toJSONOptions?: IToJSONOptions) => IService;

Converts this service to a service descriptor.
Parameter toJSONOptions
JSON conversion options
Returns
Service descriptor

class Type

class Type extends NamespaceBase {}

Reflected message type.

constructor

constructor(name: string, options?: { [k: string]: any });

Constructs a new reflected message type instance.
Parameter name
Message name
Parameter options
Declared options

property ctor

ctor: Constructor<{}>;

The registered constructor, if any registered, otherwise a generic constructor. Assigning a function replaces the internal constructor. If the function does not extend Message yet, its prototype will be setup accordingly and static methods will be populated. If it already extends Message, it will just replace the internal constructor.

property extensions

extensions: number[][];

Extension ranges, if any.

property fields

fields: { [k: string]: Field };

Message fields.

property fieldsArray

readonly fieldsArray: Field[];

Fields of this message as an array for iteration.

property fieldsById

readonly fieldsById: { [k: number]: Field };

Message fields by id.

property oneofs

oneofs: { [k: string]: OneOf };

Oneofs declared within this namespace, if any.

property oneofsArray

readonly oneofsArray: OneOf[];

Oneofs of this message as an array for iteration.

property reserved

reserved: (string | number[])[];

Reserved ranges, if any.

method add

add: (object: ReflectionObject) => Type;

Adds a nested object to this type.
Parameter object
Nested object to add
Returns
this
Throws
{TypeError} If arguments are invalid
Throws
{Error} If there is already a nested object with this name or, if a field, when there is already a field with this id

method create

create: (properties?: { [k: string]: any }) => Message<{}>;

Creates a new message of this type using the specified properties.
Parameter properties
Properties to set
Returns
Message instance

method d

static d: <T extends Message<T>>(typeName?: string) => TypeDecorator<T>;

Type decorator (TypeScript).
Parameter typeName
Type name, defaults to the constructor's name
Returns
Decorator function

method decode

decode: (reader: Reader | Uint8Array, length?: number) => Message<{}>;

Decodes a message of this type.
Parameter reader
Reader or buffer to decode from
Parameter length
Length of the message, if known beforehand
Returns
Decoded message
Throws
{Error} If the payload is not a reader or valid buffer
Throws
{util.ProtocolError<{}>} If required fields are missing

method decodeDelimited

decodeDelimited: (reader: Reader | Uint8Array) => Message<{}>;

Decodes a message of this type preceeded by its byte length as a varint.
Parameter reader
Reader or buffer to decode from
Returns
Decoded message
Throws
{Error} If the payload is not a reader or valid buffer
Throws
{util.ProtocolError} If required fields are missing

method encode

encode: (message: Message<{}> | { [k: string]: any }, writer?: Writer) => Writer;

Encodes a message of this type. Does not implicitly verify messages.
Parameter message
Message instance or plain object
Parameter writer
Writer to encode to
Returns
writer

method encodeDelimited

encodeDelimited: (
    message: Message<{}> | { [k: string]: any },
    writer?: Writer
) => Writer;

Encodes a message of this type preceeded by its byte length as a varint. Does not implicitly verify messages.
Parameter message
Message instance or plain object
Parameter writer
Writer to encode to
Returns
writer

method fromJSON

static fromJSON: (name: string, json: IType) => Type;

Creates a message type from a message type descriptor.
Parameter name
Message name
Parameter json
Message type descriptor
Returns
Created message type

method fromObject

fromObject: (object: { [k: string]: any }) => Message<{}>;

Creates a new message of this type from a plain object. Also converts values to their respective internal types.
Parameter object
Plain object to convert
Returns
Message instance

method generateConstructor

static generateConstructor: (mtype: Type) => Codegen;

Generates a constructor function for the specified type.
Parameter mtype
Message type
Returns
Codegen instance

method isReservedId

isReservedId: (id: number) => boolean;

Tests if the specified id is reserved.
Parameter id
Id to test
Returns
true if reserved, otherwise false

method isReservedName

isReservedName: (name: string) => boolean;

Tests if the specified name is reserved.
Parameter name
Name to test
Returns
true if reserved, otherwise false

method remove

remove: (object: ReflectionObject) => Type;

Removes a nested object from this type.
Parameter object
Nested object to remove
Returns
this
Throws
{TypeError} If arguments are invalid
Throws
{Error} If object is not a member of this type

method setup

setup: () => Type;

Sets up encode, decode and verify.
Returns
this

method toJSON

toJSON: (toJSONOptions?: IToJSONOptions) => IType;

Converts this message type to a message type descriptor.
Parameter toJSONOptions
JSON conversion options
Returns
Message type descriptor

method toObject

toObject: (
    message: Message<{}>,
    options?: IConversionOptions
) => { [k: string]: any };

Creates a plain object from a message of this type. Also converts values to other types if specified.
Parameter message
Message instance
Parameter options
Conversion options
Returns
Plain object

method verify

verify: (message: { [k: string]: any }) => null | string;

Verifies that field values are valid and that required fields are present.
Parameter message
Plain object to verify
Returns
null if valid, otherwise the reason why it is not

class Writer

class Writer {}

Wire format writer using Uint8Array if available, otherwise Array.

constructor

constructor();

Constructs a new writer instance.

property head

head: {};

Operations head.

property len

len: number;

Current length.

property states

states: {};

Linked forked states.

property tail

tail: {};

Operations tail

method alloc

static alloc: (size: number) => Uint8Array;

Allocates a buffer of the specified size.
Parameter size
Buffer size
Returns
Buffer

method bool

bool: (value: boolean) => Writer;

Writes a boolish value as a varint.
Parameter value
Value to write
Returns
this

method bytes

bytes: (value: Uint8Array | string) => Writer;

Writes a sequence of bytes.
Parameter value
Buffer or base64 encoded string to write
Returns
this

method create

static create: () => BufferWriter | Writer;

Creates a new writer.
Returns
A BufferWriter when Buffers are supported, otherwise a Writer

method double

double: (value: number) => Writer;

Writes a double (64 bit float).
Parameter value
Value to write
Returns
this

method finish

finish: () => Uint8Array;

Finishes the write operation.
Returns
Finished buffer

method fixed32

fixed32: (value: number) => Writer;

Writes an unsigned 32 bit value as fixed 32 bits.
Parameter value
Value to write
Returns
this

method fixed64

fixed64: (value: Long | number | string) => Writer;

Writes an unsigned 64 bit value as fixed 64 bits.
Parameter value
Value to write
Returns
this
Throws
{TypeError} If value is a string and no long library is present.

method float

float: (value: number) => Writer;

Writes a float (32 bit).
Parameter value
Value to write
Returns
this

method fork

fork: () => Writer;

Forks this writer's state by pushing it to a stack. Calling reset or ldelim resets the writer to the previous state.
Returns
this

method int32

int32: (value: number) => Writer;

Writes a signed 32 bit value as a varint.
Parameter value
Value to write
Returns
this

method int64

int64: (value: Long | number | string) => Writer;

Writes a signed 64 bit value as a varint.
Parameter value
Value to write
Returns
this
Throws
{TypeError} If value is a string and no long library is present.

method ldelim

ldelim: () => Writer;

Resets to the last state and appends the fork state's current write length as a varint followed by its operations.
Returns
this

method reset

reset: () => Writer;

Resets this instance to the last state.
Returns
this

method sfixed32

sfixed32: (value: number) => Writer;

Writes a signed 32 bit value as fixed 32 bits.
Parameter value
Value to write
Returns
this

method sfixed64

sfixed64: (value: Long | number | string) => Writer;

Writes a signed 64 bit value as fixed 64 bits.
Parameter value
Value to write
Returns
this
Throws
{TypeError} If value is a string and no long library is present.

method sint32

sint32: (value: number) => Writer;

Writes a 32 bit value as a varint, zig-zag encoded.
Parameter value
Value to write
Returns
this

method sint64

sint64: (value: Long | number | string) => Writer;

Writes a signed 64 bit value as a varint, zig-zag encoded.
Parameter value
Value to write
Returns
this
Throws
{TypeError} If value is a string and no long library is present.

method string

string: (value: string) => Writer;

Writes a string.
Parameter value
Value to write
Returns
this

method uint32

uint32: (value: number) => Writer;

Writes an unsigned 32 bit value as a varint.
Parameter value
Value to write
Returns
this

method uint64

uint64: (value: Long | number | string) => Writer;

Writes an unsigned 64 bit value as a varint.
Parameter value
Value to write
Returns
this
Throws
{TypeError} If value is a string and no long library is present.

Interfaces

interface Buffer

interface Buffer extends Uint8Array {}

Any compatible Buffer instance. This is a minimal stand-alone definition of a Buffer instance. The actual type is that exported by node's typings.

interface Constructor

interface Constructor<T> extends Function {}

Constructor type.

property prototype

prototype: T;

construct signature

new (...params: any[]): T;

interface IConversionOptions

interface IConversionOptions {}

Conversion options as used by Type#toObject and Message.toObject.

property arrays

arrays?: boolean;

Sets empty arrays for missing repeated fields even if defaults=false

property bytes

bytes?: Function;

Bytes value conversion type. Valid values are Array and (a base64 encoded) String (the global types). Defaults to copy the present value, which usually is a Buffer under node and an Uint8Array in the browser.

property defaults

defaults?: boolean;

Also sets default values on the resulting object

property enums

enums?: Function;

Enum value conversion type. Only valid value is String (the global type). Defaults to copy the present value, which is the numeric id.

property json

json?: boolean;

Performs additional JSON compatibility conversions, i.e. NaN and Infinity to strings

property longs

longs?: Function;

Long conversion type. Valid values are String and Number (the global types). Defaults to copy the present value, which is a possibly unsafe number without and a Long with a long library.

property objects

objects?: boolean;

Sets empty objects for missing map fields even if defaults=false

property oneofs

oneofs?: boolean;

Includes virtual oneof properties set to the present field's name, if any

interface IEnum

interface IEnum {}

Enum descriptor.

property options

options?: { [k: string]: any };

Enum options

property values

values: { [k: string]: number };

Enum values

interface IExtensionField

interface IExtensionField extends IField {}

Extension field descriptor.

property extend

extend: string;

Extended type

interface IExtensionMapField

interface IExtensionMapField extends IMapField {}

Extension map field descriptor.

property extend

extend: string;

Extended type

interface IFetchOptions

interface IFetchOptions {}

Options as used by util.fetch.

property binary

binary?: boolean;

Whether expecting a binary response

property xhr

xhr?: boolean;

If true, forces the use of XMLHttpRequest

interface IField

interface IField {}

Field descriptor.

property id

id: number;

Field id

property options

options?: { [k: string]: any };

Field options

property rule

rule?: string;

Field rule

property type

type: string;

Field type

interface IMapField

interface IMapField extends IField {}

Map field descriptor.

property keyType

keyType: string;

Key type

interface IMethod

interface IMethod {}

Method descriptor.

property comment

comment: string;

Method comments

property options

options?: { [k: string]: any };

Method options

property parsedOptions

parsedOptions?: { [k: string]: any };

Method options properly parsed into an object

property requestStream

requestStream?: boolean;

Whether requests are streamed

property requestType

requestType: string;

Request type

property responseStream

responseStream?: boolean;

Whether responses are streamed

property responseType

responseType: string;

Response type

property type

type?: string;

Method type

interface INamespace

interface INamespace {}

Namespace descriptor.

property nested

nested?: { [k: string]: AnyNestedObject };

Nested object descriptors

property options

options?: { [k: string]: any };

Namespace options

interface IOneOf

interface IOneOf {}

Oneof descriptor.

property oneof

oneof: string[];

Oneof field names

property options

options?: { [k: string]: any };

Oneof options

interface IParseOptions

interface IParseOptions {}

Options modifying the behavior of parse.

property alternateCommentMode

alternateCommentMode?: boolean;

Recognize double-slash comments in addition to doc-block comments.

property keepCase

keepCase?: boolean;

Keeps field casing instead of converting to camel case

property preferTrailingComment

preferTrailingComment?: boolean;

Use trailing comment when both leading comment and trailing comment exist.

interface IParserResult

interface IParserResult {}

Result object returned from parse.

property imports

imports: string[] | undefined;

Imports, if any

property package

package: string | undefined;

Package name, if declared

property root

root: Root;

Populated root instance

property syntax

syntax: string | undefined;

Syntax, if specified (either "proto2" or "proto3")

property weakImports

weakImports: string[] | undefined;

Weak imports, if any

interface IService

interface IService extends INamespace {}

Service descriptor.

property methods

methods: { [k: string]: IMethod };

Method descriptors

interface IToJSONOptions

interface IToJSONOptions {}

Options modifying the behavior of JSON serialization.

property keepComments

keepComments?: boolean;

Serializes comments.

interface ITokenizerHandle

interface ITokenizerHandle {}

Handle object returned from tokenize.

property cmnt

cmnt: TokenizerHandleCmnt;

Gets the comment on the previous line or the line comment on the specified line, if any

property line

line: number;

Current line number

property next

next: TokenizerHandleNext;

Gets the next token and advances (null on eof)

property peek

peek: TokenizerHandlePeek;

Peeks for the next token (null on eof)

property push

push: TokenizerHandlePush;

Pushes a token back to the stack

property skip

skip: TokenizerHandleSkip;

Skips a token, returns its presence and advances or, if non-optional and not present, throws

interface IType

interface IType extends INamespace {}

Message type descriptor.

property extensions

extensions?: number[][];

Extension ranges

property fields

fields: { [k: string]: IField };

Field descriptors

property group

group?: boolean;

Whether a legacy group or not

property oneofs

oneofs?: { [k: string]: IOneOf };

Oneof descriptors

property reserved

reserved?: (number[] | string)[];

Reserved ranges

interface IWrapper

interface IWrapper {}

Common type wrapper part of wrappers.

property fromObject

fromObject?: WrapperFromObjectConverter;

From object converter

property toObject

toObject?: WrapperToObjectConverter;

To object converter

interface Long

interface Long {}

Any compatible Long instance. This is a minimal stand-alone definition of a Long instance. The actual type is that exported by long.js.

property high

high: number;

High bits

property low

low: number;

Low bits

property unsigned

unsigned: boolean;

Whether unsigned or not

Type Aliases

type AnyExtensionField

type AnyExtensionField = IExtensionField | IExtensionMapField;

Any extension field descriptor.

type AnyNestedObject

type AnyNestedObject =
    | IEnum
    | IType
    | IService
    | AnyExtensionField
    | INamespace
    | IOneOf;

Any nested object descriptor.

type asPromiseCallback

type asPromiseCallback = (error: Error | null, ...params: any[]) => void;

Callback as used by util.asPromise.
Parameter error
Error, if any
Parameter params
Additional arguments

type Codegen

type Codegen = (
    formatStringOrScope?: string | { [k: string]: any },
    ...formatParams: any[]
) => Codegen | Function;

Appends code to the function's body or finishes generation.
Parameter formatStringOrScope
Format string or, to finish the function, an object of additional scope variables, if any
Parameter formatParams
Format parameters
Returns
Itself or the generated function if finished
Throws
{Error} If format parameter counts do not match

type EventEmitterListener

type EventEmitterListener = (...args: any[]) => void;

Event listener as used by util.EventEmitter.
Parameter args
Arguments

type FetchCallback

type FetchCallback = (error: Error, contents?: string) => void;

Node-style callback as used by util.fetch.
Parameter error
Error, if any, otherwise null
Parameter contents
File contents, if there hasn't been an error

type FieldDecorator

type FieldDecorator = (prototype: object, fieldName: string) => void;

Decorator function as returned by Field.d and MapField.d (TypeScript).
Parameter prototype
Target prototype
Parameter fieldName
Field name

type LoadCallback

type LoadCallback = (error: Error | null, root?: Root) => void;

A node-style callback as used by load and Root#load.
Parameter error
Error, if any, otherwise null
Parameter root
Root, if there hasn't been an error

type OneOfDecorator

type OneOfDecorator = (prototype: object, oneofName: string) => void;

Decorator function as returned by OneOf.d (TypeScript).
Parameter prototype
Target prototype
Parameter oneofName
OneOf name

type OneOfGetter

type OneOfGetter = () => string | undefined;

A OneOf getter as returned by util.oneOfGetter.
Returns
Set field name, if any

type OneOfSetter

type OneOfSetter = (value: string | undefined) => void;

A OneOf setter as returned by util.oneOfSetter.
Parameter value
Field name

type PoolAllocator

type PoolAllocator = (size: number) => Uint8Array;

An allocator as used by util.pool.
Parameter size
Buffer size
Returns
Buffer

type PoolSlicer

type PoolSlicer = (this: Uint8Array, start: number, end: number) => Uint8Array;

A slicer as used by util.pool.
Parameter start
Start offset
Parameter end
End offset
Returns
Buffer slice

type Properties

type Properties<T> = { [P in keyof T]?: T[P] };

Properties type.

type RPCImpl

type RPCImpl = (
    method: Method | rpc.ServiceMethod<Message<{}>, Message<{}>>,
    requestData: Uint8Array,
    callback: RPCImplCallback
) => void;

RPC implementation passed to Service#create performing a service request on network level, i.e. by utilizing http requests or websockets.
Parameter method
Reflected or static method being called
Parameter requestData
Request data
Parameter callback
Callback function

type RPCImplCallback

type RPCImplCallback = (error: Error | null, response?: Uint8Array | null) => void;

Node-style callback as used by RPCImpl.
Parameter error
Error, if any, otherwise null
Parameter response
Response data or null to signal end of stream, if there hasn't been an error

type TokenizerHandleCmnt

type TokenizerHandleCmnt = (line?: number) => string | null;

Gets the comment on the previous line or, alternatively, the line comment on the specified line.
Parameter line
Line number
Returns
Comment text or null if none

type TokenizerHandleNext

type TokenizerHandleNext = () => string | null;

Gets the next token and advances.
Returns
Next token or null on eof

type TokenizerHandlePeek

type TokenizerHandlePeek = () => string | null;

Peeks for the next token.
Returns
Next token or null on eof

type TokenizerHandlePush

type TokenizerHandlePush = (token: string) => void;

Pushes a token back to the stack.
Parameter token
Token

type TokenizerHandleSkip

type TokenizerHandleSkip = (expected: string, optional?: boolean) => boolean;

Skips the next token.
Parameter expected
Expected token
Parameter optional
If optional
Returns
Whether the token matched
Throws
{Error} If the token didn't match and is not optional

type TypeDecorator

type TypeDecorator<T extends Message<T>> = (target: Constructor<T>) => void;

Decorator function as returned by Type.d (TypeScript).
Parameter target
Target constructor

type WrapperFromObjectConverter

type WrapperFromObjectConverter = (
    this: Type,
    object: { [k: string]: any }
) => Message<{}>;

From object converter part of an IWrapper.
Parameter object
Plain object
Returns
Message instance

type WrapperToObjectConverter

type WrapperToObjectConverter = (
    this: Type,
    message: Message<{}>,
    options?: IConversionOptions
) => { [k: string]: any };

To object converter part of an IWrapper.
Parameter message
Message instance
Parameter options
Conversion options
Returns
Plain object

Namespaces

namespace common

namespace common {}

function get

get: (file: string) => INamespace | null;

Gets the root definition of the specified common proto file.
Bundled definitions are: - google/protobuf/any.proto - google/protobuf/duration.proto - google/protobuf/empty.proto - google/protobuf/field_mask.proto - google/protobuf/struct.proto - google/protobuf/timestamp.proto - google/protobuf/wrappers.proto
Parameter file
Proto file name
Returns
Root definition or null if not defined

interface IAny

interface IAny {}

Properties of a google.protobuf.Any message.

property bytes

bytes?: Uint8Array;

property typeUrl

typeUrl?: string;

interface IBoolValue

interface IBoolValue {}

Properties of a google.protobuf.BoolValue message.

property value

value?: boolean;

interface IBytesValue

interface IBytesValue {}

Properties of a google.protobuf.BytesValue message.

property value

value?: Uint8Array;

interface IDoubleValue

interface IDoubleValue {}

Properties of a google.protobuf.DoubleValue message.

property value

value?: number;

interface IDuration

interface IDuration {}

Properties of a google.protobuf.Duration message.

property nanos

nanos?: number;

property seconds

seconds?: number | Long;

interface IEmpty

interface IEmpty {}

Properties of a google.protobuf.Empty message.

interface IFloatValue

interface IFloatValue {}

Properties of a google.protobuf.FloatValue message.

property value

value?: number;

interface IInt32Value

interface IInt32Value {}

Properties of a google.protobuf.Int32Value message.

property value

value?: number;

interface IInt64Value

interface IInt64Value {}

Properties of a google.protobuf.Int64Value message.

property value

value?: number | Long;

interface IListValue

interface IListValue {}

Properties of a google.protobuf.ListValue message.

property values

values?: IValue[];

interface IStringValue

interface IStringValue {}

Properties of a google.protobuf.StringValue message.

property value

value?: string;

interface IStruct

interface IStruct {}

Properties of a google.protobuf.Struct message.

property fields

fields?: { [k: string]: IValue };

interface ITimestamp

interface ITimestamp {}

Properties of a google.protobuf.Timestamp message.

property nanos

nanos?: number;

property seconds

seconds?: number | Long;

interface IUInt32Value

interface IUInt32Value {}

Properties of a google.protobuf.UInt32Value message.

property value

value?: number;

interface IUInt64Value

interface IUInt64Value {}

Properties of a google.protobuf.UInt64Value message.

property value

value?: number | Long;

interface IValue

interface IValue {}

Properties of a google.protobuf.Value message.

property boolValue

boolValue?: boolean;

property kind

kind?: string;

property listValue

listValue?: IListValue;

property nullValue

nullValue?: 0;

property numberValue

numberValue?: number;

property stringValue

stringValue?: string;

property structValue

structValue?: IStruct;

namespace converter

namespace converter {}

Runtime message from/to plain object converters.

function fromObject

fromObject: (mtype: Type) => Codegen;

Generates a plain object to runtime message converter specific to the specified message type.
Parameter mtype
Message type
Returns
Codegen instance

function toObject

toObject: (mtype: Type) => Codegen;

Generates a runtime message to plain object converter specific to the specified message type.
Parameter mtype
Message type
Returns
Codegen instance

namespace rpc

namespace rpc {}

Streaming RPC helpers.

class Service

class Service extends util.EventEmitter {}

An RPC service as returned by Service#create.

constructor

constructor(
    rpcImpl: RPCImpl,
    requestDelimited?: boolean,
    responseDelimited?: boolean
);

Constructs a new RPC service instance.
Parameter rpcImpl
RPC implementation
Parameter requestDelimited
Whether requests are length-delimited
Parameter responseDelimited
Whether responses are length-delimited

property requestDelimited

requestDelimited: boolean;

Whether requests are length-delimited.

property responseDelimited

responseDelimited: boolean;

Whether responses are length-delimited.

property rpcImpl

rpcImpl: RPCImpl;

RPC implementation. Becomes null once the service is ended.

method end

end: (endedByRPC?: boolean) => rpc.Service;

Ends this service and emits the end event.
Parameter endedByRPC
Whether the service has been ended by the RPC implementation.
Returns
this

method rpcCall

rpcCall: <TReq extends Message<TReq>, TRes extends Message<TRes>>(
    method: Method | rpc.ServiceMethod<TReq, TRes>,
    requestCtor: Constructor<TReq>,
    responseCtor: Constructor<TRes>,
    request: TReq | Properties<TReq>,
    callback: rpc.ServiceMethodCallback<TRes>
) => void;

Calls a service method through rpcImpl.
Parameter method
Reflected or static method
Parameter requestCtor
Request constructor
Parameter responseCtor
Response constructor
Parameter request
Request message or plain object
Parameter callback
Service callback

type ServiceMethod

type ServiceMethod<TReq extends Message<TReq>, TRes extends Message<TRes>> = (
    request: TReq | Properties<TReq>,
    callback?: rpc.ServiceMethodCallback<TRes>
) => Promise<Message<TRes>>;

A service method part of a rpc.Service as created by Service.create.
Parameter request
Request message or plain object
Parameter callback
Node-style callback called with the error, if any, and the response message
Returns
Promise if callback has been omitted, otherwise undefined

type ServiceMethodCallback

type ServiceMethodCallback<TRes extends Message<TRes>> = (
    error: Error | null,
    response?: TRes
) => void;

A service method callback as used by ServiceMethod.
Differs from RPCImplCallback in that it is an actual callback of a service method which may not return response = null.
Parameter error
Error, if any
Parameter response
Response message

namespace tokenize

namespace tokenize {}

function unescape

unescape: (str: string) => string;

Unescapes a string.
Parameter str
String to unescape
Returns
Unescaped string

namespace types

namespace types {}

Common type constants.

variable basic

const basic: {
    double: number;
    float: number;
    int32: number;
    uint32: number;
    sint32: number;
    fixed32: number;
    sfixed32: number;
    int64: number;
    uint64: number;
    sint64: number;
    fixed64: number;
    sfixed64: number;
    bool: number;
    string: number;
    bytes: number;
};

Basic type wire types.

variable defaults

const defaults: {
    double: number;
    float: number;
    int32: number;
    uint32: number;
    sint32: number;
    fixed32: number;
    sfixed32: number;
    int64: number;
    uint64: number;
    sint64: number;
    fixed64: number;
    sfixed64: number;
    bool: boolean;
    string: string;
    bytes: number[];
    message: null;
};

Basic type defaults.

variable long

const long: {
    int64: number;
    uint64: number;
    sint64: number;
    fixed64: number;
    sfixed64: number;
};

Basic long type wire types.

variable mapKey

const mapKey: {
    int32: number;
    uint32: number;
    sint32: number;
    fixed32: number;
    sfixed32: number;
    int64: number;
    uint64: number;
    sint64: number;
    fixed64: number;
    sfixed64: number;
    bool: number;
    string: number;
};

Allowed types for map keys with their associated wire type.

variable packed

const packed: {
    double: number;
    float: number;
    int32: number;
    uint32: number;
    sint32: number;
    fixed32: number;
    sfixed32: number;
    int64: number;
    uint64: number;
    sint64: number;
    fixed64: number;
    sfixed64: number;
    bool: number;
};

Allowed types for packed repeated fields with their associated wire type.

namespace util

namespace util {}

Various utility functions.

variable Array

let Array: Constructor<Uint8Array>;

Array implementation used in the browser. Uint8Array if supported, otherwise Array.

variable Buffer

let Buffer: Constructor<Buffer>;

Node's Buffer class if available.

variable decorateRoot

let decorateRoot: Root;

Decorator root (TypeScript).

variable emptyArray

const emptyArray: any[];

An immuable empty array.

variable emptyObject

const emptyObject: {};

An immutable empty object.

variable fs

let fs: { [k: string]: any };

Node's fs module if available.

variable global

let global: {};

Global object reference.

variable isNode

let isNode: boolean;

Whether running within node or not.

variable key2Re

const key2Re: RegExp;

Regular expression used to verify 2 bit (bool) map keys.

variable key32Re

const key32Re: RegExp;

Regular expression used to verify 32 bit (int32 etc.) map keys.

variable key64Re

const key64Re: RegExp;

Regular expression used to verify 64 bit (int64 etc.) map keys.

variable Long

let Long: Constructor<Long>;

Long.js's Long class if available.

variable toJSONOptions

let toJSONOptions: IConversionOptions;

Default conversion options used for Message#toJSON implementations.
These options are close to proto3's JSON mapping with the exception that internal types like Any are handled just like messages. More precisely:
- Longs become strings - Enums become string keys - Bytes become base64 encoded strings - (Sub-)Messages become plain objects - Maps become plain objects with all string keys - Repeated fields become arrays - NaN and Infinity for float and double fields become strings
See Also
- https://developers.google.com/protocol-buffers/docs/proto3?hl=en#json

function asPromise

asPromise: (fn: asPromiseCallback, ctx: any, ...params: any[]) => Promise<any>;

Returns a promise from a node-style callback function.
Parameter fn
Function to call
Parameter ctx
Function context
Parameter params
Function arguments
Returns
Promisified function

function camelCase

camelCase: (str: string) => string;

Converts a string to camel case.
Parameter str
String to convert
Returns
Converted string

function codegen

codegen: typeof codegen;

Begins generating a function.
Parameter functionParams
Function parameter names
Parameter functionName
Function name if not anonymous
Returns
Appender that appends code to the function's body
Begins generating a function.
Parameter functionName
Function name if not anonymous
Returns
Appender that appends code to the function's body

function compareFieldsById

compareFieldsById: (a: Field, b: Field) => number;

Compares reflected fields by id.
Parameter a
First field
Parameter b
Second field
Returns
Comparison value

function decorateEnum

decorateEnum: (object: object) => Enum;

Decorator helper for enums (TypeScript).
Parameter object
Enum object
Returns
Reflected enum

function decorateType

decorateType: <T extends Message<T>>(
    ctor: Constructor<T>,
    typeName?: string
) => Type;

Decorator helper for types (TypeScript).
Parameter ctor
Constructor function
Parameter typeName
Type name, defaults to the constructor's name
Returns
Reflected type

function fetch

fetch: {
    (filename: string, options: IFetchOptions, callback: FetchCallback): void;
    (path: string, callback: FetchCallback): void;
    (path: string, options?: IFetchOptions): Promise<string | Uint8Array>;
};

Fetches the contents of a file.
Parameter filename
File path or url
Parameter options
Fetch options
Parameter callback
Callback function
Fetches the contents of a file.
Parameter path
File path or url
Parameter callback
Callback function
Fetches the contents of a file.
Parameter path
File path or url
Parameter options
Fetch options
Returns
Promise

function inquire

inquire: (moduleName: string) => object;

Requires a module only if available.
Parameter moduleName
Module to require
Returns
Required module if available and not empty, otherwise null

function isInteger

isInteger: (value: any) => boolean;

Tests if the specified value is an integer.
Parameter value
Value to test
Returns
true if the value is an integer

function isObject

isObject: (value: any) => boolean;

Tests if the specified value is a non-null object.
Parameter value
Value to test
Returns
true if the value is a non-null object

function isReserved

isReserved: (name: string) => boolean;

Tests whether the specified name is a reserved word in JS.
Parameter name
Name to test
Returns
true if reserved, otherwise false

function isset

isset: (obj: object, prop: string) => boolean;

Checks if a property on a message is considered to be present. This is an alias of util.isSet.
Parameter obj
Plain object or message instance
Parameter prop
Property name
Returns
true if considered to be present, otherwise false

function isSet

isSet: (obj: object, prop: string) => boolean;

Checks if a property on a message is considered to be present.
Parameter obj
Plain object or message instance
Parameter prop
Property name
Returns
true if considered to be present, otherwise false

function isString

isString: (value: any) => boolean;

Tests if the specified value is a string.
Parameter value
Value to test
Returns
true if the value is a string

function lcFirst

lcFirst: (str: string) => string;

Converts the first character of a string to lower case.
Parameter str
String to convert
Returns
Converted string

function longFromHash

longFromHash: (hash: string, unsigned?: boolean) => Long | number;

Converts an 8 characters long hash string to a long or number.
Parameter hash
Hash
Parameter unsigned
Whether unsigned or not
Returns
Original value

function longToHash

longToHash: (value: Long | number) => string;

Converts a number or long to an 8 characters long hash string.
Parameter value
Value to convert
Returns
Hash

function merge

merge: (
    dst: { [k: string]: any },
    src: { [k: string]: any },
    ifNotSet?: boolean
) => { [k: string]: any };

Merges the properties of the source object into the destination object.
Parameter dst
Destination object
Parameter src
Source object
Parameter ifNotSet
Merges only if the key is not already set
Returns
Destination object

function newBuffer

newBuffer: (sizeOrArray?: number | number[]) => Uint8Array | Buffer;

Creates a new buffer of whatever type supported by the environment.
Parameter sizeOrArray
Buffer size or number array
Returns
Buffer

function newError

newError: (name: string) => Constructor<Error>;

Creates a custom error constructor.
Parameter name
Error name
Returns
Custom error constructor

function oneOfGetter

oneOfGetter: (fieldNames: string[]) => OneOfGetter;

Builds a getter for a oneof's present field name.
Parameter fieldNames
Field names
Returns
Unbound getter

function oneOfSetter

oneOfSetter: (fieldNames: string[]) => OneOfSetter;

Builds a setter for a oneof's present field name.
Parameter fieldNames
Field names
Returns
Unbound setter

function pool

pool: (alloc: PoolAllocator, slice: PoolSlicer, size?: number) => PoolAllocator;

A general purpose buffer pool.
Parameter alloc
Allocator
Parameter slice
Slicer
Parameter size
Slab size
Returns
Pooled allocator

function safeProp

safeProp: (prop: string) => string;

Returns a safe property accessor for the specified property name.
Parameter prop
Property name
Returns
Safe accessor

function setProperty

setProperty: (
    dst: { [k: string]: any },
    path: string,
    value: object
) => { [k: string]: any };

Sets the value of a property by property path. If a value already exists, it is turned to an array
Parameter dst
Destination object
Parameter path
dot '.' delimited path of the property to set
Parameter value
the value to set
Returns
Destination object

function toArray

toArray: (object: { [k: string]: any }) => any[];

Converts an object's values to an array.
Parameter object
Object to convert
Returns
Converted array

function toObject

toObject: (array: any[]) => { [k: string]: any };

Converts an array of keys immediately followed by their respective value to an object, omitting undefined values.
Parameter array
Array to convert
Returns
Converted object

function ucFirst

ucFirst: (str: string) => string;

Converts the first character of a string to upper case.
Parameter str
String to convert
Returns
Converted string

class EventEmitter

class EventEmitter {}

A minimal event emitter.

constructor

constructor();

Constructs a new event emitter instance.

method emit

emit: (evt: string, ...args: any[]) => this;

Emits an event by calling its listeners with the specified arguments.
Parameter evt
Event name
Parameter args
Arguments
Returns
this

method off

off: (evt?: string, fn?: EventEmitterListener) => this;

Removes an event listener or any matching listeners if arguments are omitted.
Parameter evt
Event name. Removes all listeners if omitted.
Parameter fn
Listener to remove. Removes all listeners of evt if omitted.
Returns
this

method on

on: (evt: string, fn: EventEmitterListener, ctx?: any) => this;

Registers an event listener.
Parameter evt
Event name
Parameter fn
Listener
Parameter ctx
Listener context
Returns
this

class LongBits

class LongBits {}

Helper class for working with the low and high bits of a 64 bit value.

constructor

constructor(lo: number, hi: number);

Constructs new long bits.
Parameter lo
Low 32 bits, unsigned
Parameter hi
High 32 bits, unsigned

property hi

hi: number;

High bits.

property lo

lo: number;

Low bits.

property zero

static zero: LongBits;

Zero bits.

property zeroHash

static zeroHash: string;

Zero hash.

method from

static from: (value: Long | number | string) => util.LongBits;

Constructs new long bits from a number, long or string.
Parameter value
Value
Returns
Instance

method fromHash

static fromHash: (hash: string) => util.LongBits;

Constructs new long bits from the specified 8 characters long hash.
Parameter hash
Hash
Returns
Bits

method fromNumber

static fromNumber: (value: number) => util.LongBits;

Constructs new long bits from the specified number.
Parameter value
Value
Returns
Instance

method length

length: () => number;

Calculates the length of this longbits when encoded as a varint.
Returns
Length

method toHash

toHash: () => string;

Converts this long bits to a 8 characters long hash.
Returns
Hash

method toLong

toLong: (unsigned?: boolean) => Long;

Converts this long bits to a long.
Parameter unsigned
Whether unsigned or not
Returns
Long

method toNumber

toNumber: (unsigned?: boolean) => number;

Converts this long bits to a possibly unsafe JavaScript number.
Parameter unsigned
Whether unsigned or not
Returns
Possibly unsafe number

method zzDecode

zzDecode: () => util.LongBits;

Zig-zag decodes this long bits.
Returns
this

method zzEncode

zzEncode: () => util.LongBits;

Zig-zag encodes this long bits.
Returns
this

class ProtocolError

class ProtocolError<T extends Message<T>> extends Error {}

Error subclass indicating a protocol specifc error.

constructor

constructor(message: string, properties?: { [k: string]: any });

Constructs a new protocol error.
Parameter message
Error message
Parameter properties
Additional properties

property instance

instance: Message<T>;

So far decoded message instance.

namespace util.base64

namespace util.base64 {}

A minimal base64 implementation for number arrays.

function decode

decode: (string: string, buffer: Uint8Array, offset: number) => number;

Decodes a base64 encoded string to a buffer.
Parameter string
Source string
Parameter buffer
Destination buffer
Parameter offset
Destination offset
Returns
Number of bytes written
Throws
{Error} If encoding is invalid

function encode

encode: (buffer: Uint8Array, start: number, end: number) => string;

Encodes a buffer to a base64 encoded string.
Parameter buffer
Source buffer
Parameter start
Source start
Parameter end
Source end
Returns
Base64 encoded string

function length

length: (string: string) => number;

Calculates the byte length of a base64 encoded string.
Parameter string
Base64 encoded string
Returns
Byte length

function test

test: (string: string) => boolean;

Tests if the specified string appears to be base64 encoded.
Parameter string
String to test
Returns
true if probably base64 encoded, otherwise false

namespace util.codegen

namespace util.codegen {}

variable verbose

let verbose: boolean;

When set to true, codegen will log generated code to console. Useful for debugging.

namespace util.float

namespace util.float {}

Reads / writes floats / doubles from / to buffers.

function readDoubleBE

readDoubleBE: (buf: Uint8Array, pos: number) => number;

Reads a 64 bit double from a buffer using big endian byte order.
Parameter buf
Source buffer
Parameter pos
Source buffer offset
Returns
Value read

function readDoubleLE

readDoubleLE: (buf: Uint8Array, pos: number) => number;

Reads a 64 bit double from a buffer using little endian byte order.
Parameter buf
Source buffer
Parameter pos
Source buffer offset
Returns
Value read

function readFloatBE

readFloatBE: (buf: Uint8Array, pos: number) => number;

Reads a 32 bit float from a buffer using big endian byte order.
Parameter buf
Source buffer
Parameter pos
Source buffer offset
Returns
Value read

function readFloatLE

readFloatLE: (buf: Uint8Array, pos: number) => number;

Reads a 32 bit float from a buffer using little endian byte order.
Parameter buf
Source buffer
Parameter pos
Source buffer offset
Returns
Value read

function writeDoubleBE

writeDoubleBE: (val: number, buf: Uint8Array, pos: number) => void;

Writes a 64 bit double to a buffer using big endian byte order.
Parameter val
Value to write
Parameter buf
Target buffer
Parameter pos
Target buffer offset

function writeDoubleLE

writeDoubleLE: (val: number, buf: Uint8Array, pos: number) => void;

Writes a 64 bit double to a buffer using little endian byte order.
Parameter val
Value to write
Parameter buf
Target buffer
Parameter pos
Target buffer offset

function writeFloatBE

writeFloatBE: (val: number, buf: Uint8Array, pos: number) => void;

Writes a 32 bit float to a buffer using big endian byte order.
Parameter val
Value to write
Parameter buf
Target buffer
Parameter pos
Target buffer offset

function writeFloatLE

writeFloatLE: (val: number, buf: Uint8Array, pos: number) => void;

Writes a 32 bit float to a buffer using little endian byte order.
Parameter val
Value to write
Parameter buf
Target buffer
Parameter pos
Target buffer offset

namespace util.path

namespace util.path {}

A minimal path module to resolve Unix, Windows and URL paths alike.

function isAbsolute

isAbsolute: (path: string) => boolean;

Tests if the specified path is absolute.
Parameter path
Path to test
Returns
true if path is absolute

function normalize

normalize: (path: string) => string;

Normalizes the specified path.
Parameter path
Path to normalize
Returns
Normalized path

function resolve

resolve: (
    originPath: string,
    includePath: string,
    alreadyNormalized?: boolean
) => string;

Resolves the specified include path against the specified origin path.
Parameter originPath
Path to the origin file
Parameter includePath
Include path relative to origin path
Parameter alreadyNormalized
true if both paths are already known to be normalized
Returns
Path to the include file

namespace util.utf8

namespace util.utf8 {}

A minimal UTF8 implementation for number arrays.

function length

length: (string: string) => number;

Calculates the UTF8 byte length of a string.
Parameter string
String
Returns
Byte length

function read

read: (buffer: Uint8Array, start: number, end: number) => string;

Reads UTF8 bytes as a string.
Parameter buffer
Source buffer
Parameter start
Source start
Parameter end
Source end
Returns
String read

function write

write: (string: string, buffer: Uint8Array, offset: number) => number;

Writes a string as UTF8 bytes.
Parameter string
Source string
Parameter buffer
Destination buffer
Parameter offset
Destination offset
Returns
Bytes written

Package Files (1)

index.d.ts

Dependencies (12)

Peer Dependencies (0)

No peer dependencies.

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protobufjs

Install

Overview

Index

Variables

Functions

Classes

Interfaces

Type Aliases

Namespaces

Variables

variable build

variable roots

variable wrappers

Functions

function common

Parameter name

Parameter json

function configure

function decoder

Parameter mtype

Returns

function encoder

Parameter mtype

Returns

function load

Parameter filename

Parameter root

Parameter callback

See Also

Parameter filename

Parameter callback

See Also

Parameter filename

Parameter root

Returns

See Also

function loadSync

Parameter filename

Parameter root

Returns

Throws

See Also

function parse

Parameter source

Parameter options

Returns

Parameter source

Parameter root

Parameter options

Returns

function tokenize

Parameter source

Parameter alternateCommentMode

Returns

function verifier

Parameter mtype

Returns

Classes

class BufferReader

constructor

Parameter buffer

method bytes

Returns

class BufferWriter

constructor

method alloc

Parameter size

Returns

method finish

Returns

class Enum

constructor

Parameter name

Parameter values

Parameter options

Parameter comment

Parameter comments

Parameter valuesOptions

property comment