Function parseParam

scripts/libs/esprima.js:4002–4027

(options)

    }

    function parseParam(options) {
        var token, param, def;

        token = lookahead;
        if (token.value === '...') {
            param = parseRestElement();
            validateParam(options, param.argument, param.argument.name);
            options.params.push(param);
            options.defaults.push(null);
            return false;
        }

        param = parsePatternWithDefault();
        validateParam(options, token, token.value);

        if (param.type === Syntax.AssignmentPattern) {
            def = param.right;
            param = param.left;
            ++options.defaultCount;
        }

        options.params.push(param);
        options.defaults.push(def);

        return !match(')');
    }

    function parseParams(firstRestricted) {
        var options;