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swc/crates/swc_ecma_minifier
History
Donny e33248cbcc chore: Publish crates
2021-12-21 18:21:48 +09:00
..
examples refactor: Flatten ecmascript (#2708) 2021-11-10 19:00:54 +09:00
scripts chore(scripts): Use cargo profile instruments instead of cargo instruments (#3086) 2021-12-21 16:09:19 +09:00
src refactor(es/minifier): Use swc_timer (#3087) 2021-12-21 18:19:33 +09:00
tests fix(es/minifier): Don't create top level variables (#2985) 2021-12-07 18:02:43 +09:00
.eslintrc refactor: Flatten ecmascript (#2708) 2021-11-10 19:00:54 +09:00
.gitignore refactor: Flatten ecmascript (#2708) 2021-11-10 19:00:54 +09:00
Cargo.toml chore: Publish crates 2021-12-21 18:21:48 +09:00
package.json chore(es/minifier): Add a script to copy tests from a next.js app (#2778) 2021-11-17 16:18:34 +09:00
README.md chore: Update markdown files to use "SWC" instead of "swc" (#2744) 2021-11-15 04:26:04 +00:00
yarn.lock chore(es/minifier): Add a script to copy tests from a next.js app (#2778) 2021-11-17 16:18:34 +09:00

README.md

Minifier

EcmaScript minifier for the SWC project. This is basically a port of terser.

Note

Currently name mangler is very simple. To focus on creating a MVP, I (kdy1) will use simple logic for name mangler and implement the content-aware name mangler after publishing first non-beta version.

Testing

Real-library tests

You can use vscode to see diffs. Select a file from tests/projects/output and select the corresponding file from tests/projects/refs. Then you can right click to see an option to open diff.

Splitting a library test

Extracting only subset from a library test makes development much easier.

Split status:

  • angular-1.2.5
  • backbone-1.1.0
  • jquery-1.9.1
  • jquery.mobile-1.4.2
  • mootools-1.4.5
  • underscore-1.5.2
  • yui-3.12.0

Tests from terser

Tests ported from terser has

  • input.js
  • config.json
  • mangle.json (if name mangling is enabled)
  • output.js (if exists and can be modified if our one is better or due to lack of frequency-aware base54)
  • output.terser.js (if exists)

Copying tests

Replace the content of terser/test/compress.js with it of scripts/compress.js and run npm run test:compress