1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
|
import konan from 'konan';
import { modules, ignored } from 'core-js-compat/src/data.mjs';
async function jsModulesFrom(path) {
const directory = await fs.readdir(path);
return new Set(directory.filter(it => it.endsWith('.js')).map(it => it.slice(0, -3)));
}
function log(set, kind) {
if (set.size) {
echo(chalk.red(`found some unused ${ kind }:`));
set.forEach(it => echo(chalk.cyan(it)));
} else echo(chalk.green(`unused ${ kind } not found`));
}
const globalModules = await jsModulesFrom('packages/core-js/modules');
const definedModules = new Set([
...modules,
...ignored,
// TODO: Drop from core-js@4
'esnext.string.at-alternative',
]);
globalModules.forEach(it => definedModules.has(it) && globalModules.delete(it));
log(globalModules, 'modules');
const internalModules = await jsModulesFrom('packages/core-js/internals');
const allModules = await glob('packages/core-js?(-pure)/**/*.js');
await Promise.all(allModules.map(async path => {
for (const dependency of konan(String(await fs.readFile(path))).strings) {
internalModules.delete(dependency.match(/\/internals\/(?<module>[^/]+)$/)?.groups.module);
}
}));
log(internalModules, 'internal modules');
const pureModules = new Set(await glob('packages/core-js-pure/override/**/*.js'));
await Promise.all([...pureModules].map(async path => {
if (await fs.pathExists(path.replace('-pure/override', ''))) pureModules.delete(path);
}));
log(pureModules, 'pure modules');
|
