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| author | Alex Lam S.L <alexlamsl@gmail.com> | 2017-03-03 18:04:32 +0800 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2017-03-03 18:04:32 +0800 |
| commit | 18059cc94fdc037e296a1cb1b08143d5e3aae570 (patch) | |
| tree | d8b787fba1df5fe5c5052354008084c9f74e58d3 /test/compress/drop-unused.js | |
| parent | b5e0e8c2038c7c0ea13771891eb84f6e6f7bcbc3 (diff) | |
| download | tracifyjs-18059cc94fdc037e296a1cb1b08143d5e3aae570.tar.gz tracifyjs-18059cc94fdc037e296a1cb1b08143d5e3aae570.zip | |
compress numerical expressions (#1513)
safe operations
- `a === b` => `a == b`
- `a + -b` => `a - b`
- `-a + b` => `b - a`
- `a+ +b` => `+b+a`
associative operations
(bit-wise operations are safe, otherwise `unsafe_math`)
- `a + (b + c)` => `(a + b) + c`
- `(n + 2) + 3` => `5 + n`
- `(2 * n) * 3` => `6 * n`
- `(a | 1) | (2 | d)` => `(3 | a) | b`
fixes #412
Diffstat (limited to 'test/compress/drop-unused.js')
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