feature(rome_js_parser): JSX support in .js files

[NicholasLYang]

Summary

Addresses #2625. Because TypeScript allows JSX in .js files by default, we allow the same. Also makes adoption easier because many users have React components in a .js file.

Test Plan

The existing tests for JSX should suffice.

[github-actions]

Parser conformance results on ubuntu-latest

js/262

Test result	main count	This PR count	Difference
Total	45878	45878	0
Passed	44938	44938	0
Failed	940	940	0
Panics	0	0	0
Coverage	97.95%	97.95%	0.00%

jsx/babel

Test result	main count	This PR count	Difference
Total	39	39	0
Passed	36	36	0
Failed	3	3	0
Panics	0	0	0
Coverage	92.31%	92.31%	0.00%

symbols/microsoft

Test result	main count	This PR count	Difference
Total	5946	5946	0
Passed	350	350	0
Failed	5596	5596	0
Panics	0	0	0
Coverage	5.89%	5.89%	0.00%

ts/babel

Test result	main count	This PR count	Difference
Total	588	588	0
Passed	519	519	0
Failed	69	69	0
Panics	0	0	0
Coverage	88.27%	88.27%	0.00%

ts/microsoft

Test result	main count	This PR count	Difference
Total	16257	16257	0
Passed	12391	12393	✅ ⏫ +2
Failed	3866	3864	✅ ⏬ -2
Panics	0	0	0
Coverage	76.22%	76.23%	+0.01%

🎉 Fixed (2):

compiler/jsxPreserveWithJsInput.ts
compiler/reactImportDropped.ts

[github-actions]

Playground for commit 963e48e

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View logs

[MichaReiser]

Can we verify if typescript enables JSX for cjs too? I don't see why it should be disabled, considering that server rendering is a thing now with react.

You can probably use

// SCRIPT
// ... test code

To force run the test with JSX disabled and in script mode

[MichaReiser]

This seems to still be parsed out as JSX. Can we change the test back to be parsed with JSX disabled (so that the snapshot doesn't change)

[MichaReiser]

!bench_parser

[github-actions]

Parser Benchmark Results

group                                 main                                   pr
-----                                 ----                                   --
parser/checker.ts                     1.00    171.4±9.97ms    15.2 MB/sec    1.00    171.2±7.23ms    15.2 MB/sec
parser/compiler.js                    1.00    103.4±4.70ms    10.1 MB/sec    1.01    104.8±6.00ms    10.0 MB/sec
parser/d3.min.js                      1.00     61.5±2.85ms     4.3 MB/sec    1.02     63.0±3.31ms     4.2 MB/sec
parser/dojo.js                        1.00      5.6±0.25ms    12.3 MB/sec    1.03      5.8±0.22ms    11.9 MB/sec
parser/ios.d.ts                       1.00    143.1±4.93ms    13.0 MB/sec    1.01    144.8±6.52ms    12.9 MB/sec
parser/jquery.min.js                  1.00     16.5±0.63ms     5.0 MB/sec    1.02     16.9±0.66ms     4.9 MB/sec
parser/math.js                        1.05    127.6±6.69ms     5.1 MB/sec    1.00    121.9±5.71ms     5.3 MB/sec
parser/parser.ts                      1.00      3.9±0.13ms    12.3 MB/sec    1.00      3.9±0.14ms    12.3 MB/sec
parser/pixi.min.js                    1.00     73.7±3.78ms     6.0 MB/sec    1.02     75.2±4.22ms     5.8 MB/sec
parser/react-dom.production.min.js    1.01     22.9±0.99ms     5.0 MB/sec    1.00     22.6±0.75ms     5.1 MB/sec
parser/react.production.min.js        1.03  1278.9±66.36µs     4.8 MB/sec    1.00  1245.7±45.41µs     4.9 MB/sec
parser/router.ts                      1.02      3.2±0.13ms    18.9 MB/sec    1.00      3.2±0.12ms    19.3 MB/sec
parser/tex-chtml-full.js              1.00    162.1±7.66ms     5.6 MB/sec    1.00    162.6±5.81ms     5.6 MB/sec
parser/three.min.js                   1.00     84.0±4.01ms     7.0 MB/sec    1.01     84.6±4.50ms     6.9 MB/sec
parser/typescript.js                  1.03   718.8±31.82ms    13.2 MB/sec    1.00   700.2±24.57ms    13.6 MB/sec
parser/vue.global.prod.js             1.00     28.2±1.12ms     4.3 MB/sec    1.03     29.0±1.27ms     4.2 MB/sec

[MichaReiser]

I address the review feedback. We should be good to merge now