Method isStartOfExpression

src/parser.ts:3114–3139

()

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

    isStartOfExpression(): boolean {
        let start = true;

        const value = this.lookahead.value;
        switch (this.lookahead.type) {
            case Token.Punctuator:
                start = (value === '[') || (value === '(') || (value === '{') ||
                    (value === '+') || (value === '-') ||
                    (value === '!') || (value === '~') ||
                    (value === '++') || (value === '--') ||
                    (value === '/') || (value === '/=');  // regular expression literal
                break;

            case Token.Keyword:
                start = (value === 'class') || (value === 'delete') ||
                    (value === 'function') || (value === 'let') || (value === 'new') ||
                    (value === 'super') || (value === 'this') || (value === 'typeof') ||
                    (value === 'void') || (value === 'yield');
                break;

            default:
                break;
        }

        return start;
    }

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