61 lines
2.3 KiB
JavaScript
61 lines
2.3 KiB
JavaScript
|
// This file is a bit weird, so let me explain with some context: we're working
|
||
|
|
// to implement a tool called "Corepack" in Node. This tool will allow us to
|
||
|
|
// provide a Yarn shim to everyone using Node, meaning that they won't need to
|
||
|
|
// run `npm install -g yarn`.
|
||
|
|
//
|
||
|
|
// Still, we don't want to break the experience of people that already use `npm
|
||
|
|
// install -g yarn`! And one annoying thing with npm is that they install their
|
||
|
|
// binaries directly inside the Node bin/ folder. And Because of this, they
|
||
|
|
// refuse to overwrite binaries when they detect they don't belong to npm. Which
|
||
|
|
// means that, since the "yarn" Corepack symlink belongs to Corepack and not npm,
|
||
|
|
// running `npm install -g yarn` would crash by refusing to override the binary :/
|
||
|
|
//
|
||
|
|
// And thus we have this preinstall script, which checks whether Yarn is being
|
||
|
|
// installed as a global binary, and remove the existing symlink if it detects
|
||
|
|
// it belongs to Corepack. Since preinstall scripts run, in npm, before the global
|
||
|
|
// symlink is created, we bypass this way the ownership check.
|
||
|
|
//
|
||
|
|
// More info:
|
||
|
|
// https://github.com/arcanis/pmm/issues/6
|
||
|
|
|
||
|
|
if (process.env.npm_config_global) {
|
||
|
|
var cp = require('child_process');
|
||
|
|
var fs = require('fs');
|
||
|
|
var path = require('path');
|
||
|
|
|
||
|
|
try {
|
||
|
|
var targetPath = cp.execFileSync(process.execPath, [process.env.npm_execpath, 'bin', '-g'], {
|
||
|
|
encoding: 'utf8',
|
||
|
|
stdio: ['ignore', undefined, 'ignore'],
|
||
|
|
}).replace(/\n/g, '');
|
||
|
|
|
||
|
|
var manifest = require('./package.json');
|
||
|
|
var binNames = typeof manifest.bin === 'string'
|
||
|
|
? [manifest.name.replace(/^@[^\/]+\//, '')]
|
||
|
|
: typeof manifest.bin === 'object' && manifest.bin !== null
|
||
|
|
? Object.keys(manifest.bin)
|
||
|
|
: [];
|
||
|
|
|
||
|
|
binNames.forEach(function (binName) {
|
||
|
|
var binPath = path.join(targetPath, binName);
|
||
|
|
|
||
|
|
var binTarget;
|
||
|
|
try {
|
||
|
|
binTarget = fs.readlinkSync(binPath);
|
||
|
|
} catch (err) {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (binTarget.startsWith('../lib/node_modules/corepack/')) {
|
||
|
|
try {
|
||
|
|
fs.unlinkSync(binPath);
|
||
|
|
} catch (err) {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
});
|
||
|
|
} catch (err) {
|
||
|
|
// ignore errors
|
||
|
|
}
|
||
|
|
}
|