Method parseYieldExpression

src/parser.ts:3141–3161

()

    }

    parseYieldExpression(): Node.YieldExpression {
        const node = this.createNode();
        this.expectKeyword('yield');

        let argument: Node.Expression | null = null;
        let delegate = false;
        if (!this.hasLineTerminator) {
            const previousAllowYield = this.context.allowYield;
            this.context.allowYield = false;
            delegate = this.match('*');
            if (delegate) {
                this.nextToken();
                argument = this.parseAssignmentExpression();
            } else if (this.isStartOfExpression()) {
                argument = this.parseAssignmentExpression();
            }
            this.context.allowYield = previousAllowYield;
        }

        return this.finalize(node, new Node.YieldExpression(argument, delegate));
    }

    // https://tc39.github.io/ecma262/#sec-class-definitions