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url: check forEach callback is a function #10905

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url: check forEach callback is a function #10905

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f0f65de
url: add additional tests for URLSearchParams#forEach
TimothyGu Jan 15, 2017
44acced
url: check forEach callback is a function
TimothyGu Jan 15, 2017
182ce97
More specific error message tests
TimothyGu Jan 20, 2017
c6f5900
Remove obsolete arguments.length check in forEach()
TimothyGu Jan 20, 2017
6775629
Make argument check error messages consistent with rest of code base
TimothyGu Jan 20, 2017
593a0d9
Update error messages in test
TimothyGu Jan 21, 2017
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18 changes: 8 additions & 10 deletions lib/internal/url.js
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Original file line number Diff line number Diff line change
Expand Up @@ -672,8 +672,7 @@ class URLSearchParams {
throw new TypeError('Value of `this` is not a URLSearchParams');
}
if (arguments.length < 2) {
throw new TypeError(
'Both `name` and `value` arguments need to be specified');
throw new TypeError('"name" and "value" arguments must be specified');
}

name = String(name);
Expand All @@ -687,7 +686,7 @@ class URLSearchParams {
throw new TypeError('Value of `this` is not a URLSearchParams');
}
if (arguments.length < 1) {
throw new TypeError('The `name` argument needs to be specified');
throw new TypeError('"name" argument must be specified');
}

const list = this[searchParams];
Expand All @@ -708,8 +707,7 @@ class URLSearchParams {
throw new TypeError('Value of `this` is not a URLSearchParams');
}
if (arguments.length < 2) {
throw new TypeError(
'Both `name` and `value` arguments need to be specified');
throw new TypeError('"name" and "value" arguments must be specified');
}

const list = this[searchParams];
Expand Down Expand Up @@ -749,7 +747,7 @@ class URLSearchParams {
throw new TypeError('Value of `this` is not a URLSearchParams');
}
if (arguments.length < 1) {
throw new TypeError('The `name` argument needs to be specified');
throw new TypeError('"name" argument must be specified');
}

const list = this[searchParams];
Expand All @@ -767,7 +765,7 @@ class URLSearchParams {
throw new TypeError('Value of `this` is not a URLSearchParams');
}
if (arguments.length < 1) {
throw new TypeError('The `name` argument needs to be specified');
throw new TypeError('"name" argument must be specified');
}

const list = this[searchParams];
Expand All @@ -786,7 +784,7 @@ class URLSearchParams {
throw new TypeError('Value of `this` is not a URLSearchParams');
}
if (arguments.length < 1) {
throw new TypeError('The `name` argument needs to be specified');
throw new TypeError('"name" argument must be specified');
}

const list = this[searchParams];
Expand Down Expand Up @@ -814,8 +812,8 @@ class URLSearchParams {
if (!this || !(this instanceof URLSearchParams)) {
throw new TypeError('Value of `this` is not a URLSearchParams');
}
if (arguments.length < 1) {
throw new TypeError('The `callback` argument needs to be specified');
if (typeof callback !== 'function') {
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Does this make the check on line 817 obsolete?

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@cjihrig, this provides more granular error messages, which I think is a good thing. Do you prefer me to just use the same error message for both cases?

In the browser, they have different error messages as well:

>> new URLSearchParams().forEach()
** TypeError: Failed to execute 'forEach' on 'URLSearchParams':
   1 argument required, but only 0 present.
>> new URLSearchParams().forEach(2)
** TypeError: Failed to execute 'forEach' on 'URLSearchParams':
   The callback provided as parameter 1 is not a function.

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I would remove the extraneous check as suggested

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Our error messages don't even seem to match up though. I'd still change it, but I won't fight it too much.

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Changed.

throw new TypeError('"callback" argument must be a function');
}

let list = this[searchParams];
Expand Down
14 changes: 14 additions & 0 deletions test/parallel/test-whatwg-url-searchparams.js
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Original file line number Diff line number Diff line change
Expand Up @@ -44,6 +44,20 @@ n = 0;
for (val of sp.values()) {
assert.strictEqual(val, String(values[n++]));
}
n = 0;
sp.forEach(function(val, key, obj) {
assert.strictEqual(this, undefined);
assert.strictEqual(key, 'a');
assert.strictEqual(val, String(values[n++]));
assert.strictEqual(obj, sp);
});
sp.forEach(function() {
assert.strictEqual(this, m);
}, m);
assert.throws(() => sp.forEach(),
/^TypeError: "callback" argument must be a function$/);
assert.throws(() => sp.forEach(1),
/^TypeError: "callback" argument must be a function$/);

m.search = '?a=a&b=b';
assert.strictEqual(sp.toString(), 'a=a&b=b');