@types/esutils

const esutils: {
    ast: {
        isExpression: (node: any) => boolean;
        isIterationStatement: (node: any) => boolean;
        isProblematicIfStatement: (node: any) => boolean;
        isSourceElement: (node: any) => boolean;
        isStatement: (node: any) => boolean;
        trailingStatement: any;
    };
    code: {
        isDecimalDigit: (ch: any) => boolean;
        isHexDigit: (ch: any) => boolean;
        isIdentifierPartES5: (ch: any) => boolean;
        isIdentifierPartES6: (ch: any) => boolean;
        isIdentifierStartES5: (ch: any) => boolean;
        isIdentifierStartES6: (ch: any) => boolean;
        isLineTerminator: (ch: any) => boolean;
        isOctalDigit: (ch: any) => boolean;
        isWhiteSpace: (ch: any) => boolean;
    };
    keyword: {
        isStrictModeReservedWordES6: (id: any) => boolean;
        isIdentifierES5: (id: any, strict: any) => boolean;
        isIdentifierES6: (id: any, strict: any) => boolean;
        isIdentifierNameES5: (id: any) => boolean;
        isIdentifierNameES6: (id: any) => boolean;
        isKeywordES5: (id: any, strict: any) => boolean;
        isKeywordES6: (id: any, strict: any) => boolean;
        decodeUtf16: (lead: any, trail: any) => any;
        isReservedWordES5: (id: any, strict: any) => boolean;
        isReservedWordES6: (id: any, strict: any) => boolean;
        isRestrictedWord: (id: any) => boolean;
    };
};