Method binaryPrecedence

src/parser.ts:1447–1458

(token)

    // https://tc39.github.io/ecma262/#sec-binary-logical-operators

    binaryPrecedence(token): number {
        const op = token.value;
        let precedence;
        if (token.type === Token.Punctuator) {
            precedence = this.operatorPrecedence[op] || 0;
        } else if (token.type === Token.Keyword) {
            precedence = (op === 'instanceof' || (this.context.allowIn && op === 'in')) ? 7 : 0;
        } else {
            precedence = 0;
        }
        return precedence;
    }

    parseBinaryExpression(): Node.Expression {
        const startToken = this.lookahead;