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Summary of the changes:
* define the `exports` field in `package.json`; `jQuery` & `$` are also
exported as named exports in ESM builds now
* declare `"type": "module"` globally except for the `build` folder
* add the `--esm` option to `grunt custom`, generating jQuery as an ECMAScript
module into the `dist-module` folder
* expand `node_smoke_tests` to test the slim & ESM builds and their various
combinations; also, test both jQuery loaded via a path to the file as well
as from module specifiers that should be parsed via the `exports` feature
* add details about ESM usage to the release package README
* run `compare_size` on all built minified files; don't run it anymore on
unminified files where they don't provide lots of value
* remove the remove_map_comment task; SWC doesn't insert the
`//# sourceMappingURL=` pragma by default so there's nothing to strip
Fixes gh-4592
Closes gh-5255
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Two changes have been applied:
* prefilters are now applied before data is converted to a string;
this allows prefilters to disable such a conversion
* a prefilter for binary data is added; it disables data conversion
for non-string non-plain-object `data`; for `FormData` bodies, it
removes manually-set `Content-Type` header - this is required
as browsers need to append their own boundary to the header
Ref gh-4150
Closes gh-5197
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The `test/middleware-mockserver.js` file used to have the same ESLint
settings applied as other test files that are directly run in tested
browsers. Now it shares settings of other Node.js files.
The file is now also written using modern JS, leveraging ES2018.
Closes gh-5196
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Stringifying attributes in the setter was needed for IE <=9 but it breaks
trusted types enforcement when setting a script `src` attribute.
Note that this doesn't mean script execution works. Since jQuery disables all
scripts by changing their type and then executes them by creating fresh script
tags with proper `src` & possibly other attributes, this unwraps any trusted
`src` wrappers, making the script not execute under strict CSP settings.
We might try to fix it in the future in a separate change.
Fixes gh-4948
Closes gh-4949
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This ensures HTML wrapped in TrustedHTML can be used as an input to jQuery
manipulation methods in a way that doesn't violate the
`require-trusted-types-for` Content Security Policy directive.
This commit builds on previous work needed for trusted types support, including
gh-4642 and gh-4724.
One restriction is that while any TrustedHTML wrapper should work as input
for jQuery methods like `.html()` or `.append()`, for passing directly to the
`jQuery` factory the string must start with `<` and end with `>`; no trailing
or leading whitespaces are allowed. This is necessary as we cannot parse out
a part of the input for further construction; that would violate the CSP rule -
and that's what's done to HTML input not matching these constraints.
No trusted types API is used explicitly in source; the majority of the work is
ensuring we don't pass the input converted to string to APIs that would
eventually assign it to `innerHTML`. This extra cautiousness is caused by the
API being Blink-only, at least for now.
The ban on passing strings to `innerHTML` means support tests relying on such
assignments are impossible. We don't currently have such tests on the `main`
branch but we used to have many of them in the 3.x & older lines. If there's
a need to re-add such a test, we'll need an escape hatch to skip them for apps
needing CSP-enforced TrustedHTML.
See https://web.dev/trusted-types/ for more information about TrustedHTML.
Fixes gh-4409
Closes gh-4927
Ref gh-4642
Ref gh-4724
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Only allow alphanumeric characters & underscores for callback parameters.
The change is done both for the PHP server as well as the Node.js-based version.
This is only test code so we're not fixing any security issue but it happens
often enough that the whole jQuery repository directory structure is deployed
onto the server with PHP enabled that it makes is easy to introduce security
issues if this cleanup is not done.
Ref gh-4764
Closes gh-4871
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Two issues are fixed in testing for responses with a script Content-Type not
getting auto-executed unless an explicit `dataType: "script"` is provided:
* the test is now using a correct "text/javascript" Content-Type; it was using
"text/html" until now which doesn't really check if the fix works
* the Node.js based version of the tests didn't account for an empty `header`
query string parameter
Closes gh-4824
Ref gh-2432
Ref gh-2588
Ref 39cdb8c9aa0fde68f733553ba050a2ba9d86474c
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Fixes gh-4542
Closes gh-4563
Co-authored-by: Michał Gołębiowski-Owczarek <m.goleb@gmail.com>
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This aligns the Node.js server with the previous PHP one in sending `mock.php`
as a callback if there's no `callback` parameter in the query string which is
triggered by a recently added test. This prevents the request crashing on that
Node.js server and printing a JS error:
```
TypeError: Cannot read property '1' of null
```
Closes gh-4764
Ref gh-4754
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Until now, the AJAX script transport only used a script tag to load scripts
for cross-domain requests or ones with `scriptAttrs` set. This commit makes
it also used for all async requests to avoid CSP errors arising from usage
of inline scripts. This also makes `jQuery.getScript` not trigger CSP errors
as it uses the AJAX script transport under the hood.
For sync requests such a change is impossible and that's what `jQuery._evalUrl`
uses. Fixing that is tracked in gh-1895.
The commit also makes other type of requests using the script tag version of the
script transport set its type to "GET", namely async scripts & ones with
`scriptAttrs` set in addition to the existing cross-domain ones.
Fixes gh-3969
Closes gh-4763
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Closes gh-4769
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Previously, `jQuery.ajax` with `dataType: 'json'` with a provided callback was
automatically converted to a jsonp request unless one also specified
`jsonp: false`. Today the preferred way of interacting with a cross-domain
backend is CORS which works in all browsers jQuery 4 will support.
Auto-promoting JSON requests to JSONP ones introduces a security issue as the
developer may be unaware they're not just downloading data but executing code
from a remote domain.
This commit disables the auto-promoting logic.
BREAKING CHANGE: to trigger a JSONP request, it's now required to specify
`dataType: "jsonp"`; previously some requests with `dataType: "json"` were
auto-promoted to JSONP.
Fixes gh-1799
Fixes gh-3376
Closes gh-4754
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The "jQuery.ajax() - JSONP - Same Domain" test is firing a request with
a duplicate "callback" parameter, something like (simplified):
```
mock.php?action=jsonp&callback=jQuery_1&callback=jQuery_2
```
There was a difference in how the PHP & Node.js implementations of the jsonp
action in the mock server handled situations like that. The PHP implementation
was using the latest parameter while the Node.js one was turning it into an
array but the code didn't handle this situation. Because of how JavaScript
stringifies arrays, while the PHP implementation injected the following code:
```js
jQuery_2(payload)
```
the Node.js one was injecting the following one:
```js
jQuery_1,jQuery_2(payload)
```
This is a comma expression in JavaScript; it so turned out that in the majority
of cases both callbacks were identical so it was more like:
```js
jQuery_1,jQuery_1(payload)
```
which evaluates to `jQuery_1(payload)` when `jQuery_1` is defined, making the
test go as expected. In many cases, though, especially on Travis, the callbacks
were different, triggering an `Uncaught ReferenceError` error & requiring
frequent manual re-runs of Travis builds.
This commit fixes the logic in the mock Node.js server, adding special handling
for arrays.
Closes gh-4687
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The script transport used to evaluate fetched script sources which is
undesirable for unsuccessful HTTP responses. This is different to other data
types where such a convention was fine (e.g. in case of JSON).
Fixes gh-4250
Closes gh-4379
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Also, update some tests to IE-sniff when deciding whether
to skip a test.
Fixes gh-4386
Closes gh-4387
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Also, run `grunt npmcopy` to sync the "external" directory with dependencies
from package.json. For example, the Sinon library version didn't match.
Ref gh-4234
Closes gh-4297
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Fixes gh-4278
Closes gh-4280
Ref gh-3541
Ref gh-4269
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Fixes gh-3541
Closes gh-4269
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- getResponseHeader(key) combines all header values for the provided key into a
single result where values are concatenated by ', '. This does not happen for
IE11 since multiple values for the same header are returned on separate lines.
This makes the function only return the last value of the header for IE11.
- Updated ajax headers test to better cover Object.prototype collisions
Close gh-4173
Fixes gh-3403
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- Update QUnit to 1.23.1
- Remove unused dl#dl from test/index.html
- Remove unused map#imgmap from test/index.html
- Ensure all urls to data use baseURI
- Add the 'grunt karma:main' task
- customContextFile & customDebugFile
- Add 'npm run jenkins' script
Close gh-3744
Fixes gh-1999
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