Method unexpectedTokenError

src/parser.ts:201–242

(token?: any, message?: string)

    // Throw an exception because of the token.
    unexpectedTokenError(token?: any, message?: string): Error {
        let msg = message || Messages.UnexpectedToken;

        let value;
        if (token) {
            if (!message) {
                msg = (token.type === Token.EOF) ? Messages.UnexpectedEOS :
                    (token.type === Token.Identifier) ? Messages.UnexpectedIdentifier :
                        (token.type === Token.NumericLiteral) ? Messages.UnexpectedNumber :
                            (token.type === Token.StringLiteral) ? Messages.UnexpectedString :
                                (token.type === Token.Template) ? Messages.UnexpectedTemplate :
                                    Messages.UnexpectedToken;

                if (token.type === Token.Keyword) {
                    if (this.scanner.isFutureReservedWord(token.value)) {
                        msg = Messages.UnexpectedReserved;
                    } else if (this.context.strict && this.scanner.isStrictModeReservedWord(token.value)) {
                        msg = Messages.StrictReservedWord;
                    }
                }
            }

            value = token.value;
        } else {
            value = 'ILLEGAL';
        }

        msg = msg.replace('%0', value);

        if (token && typeof token.lineNumber === 'number') {
            const index = token.start;
            const line = token.lineNumber;
            const lastMarkerLineStart = this.lastMarker.index - this.lastMarker.column;
            const column = token.start - lastMarkerLineStart + 1;
            return this.errorHandler.createError(index, line, column, msg);
        } else {
            const index = this.lastMarker.index;
            const line = this.lastMarker.line;
            const column = this.lastMarker.column + 1;
            return this.errorHandler.createError(index, line, column, msg);
        }
    }

    throwUnexpectedToken(token?, message?): never {
        throw this.unexpectedTokenError(token, message);