@zkochan/pnpm
Version:
Fast, disk space efficient package manager
66 lines • 2.59 kB
JavaScript
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var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
return new (P || (P = Promise))(function (resolve, reject) {
function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
function step(result) { result.done ? resolve(result.value) : new P(function (resolve) { resolve(result.value); }).then(fulfilled, rejected); }
step((generator = generator.apply(thisArg, _arguments || [])).next());
});
};
const fs = require("mz/fs");
const path = require("path");
const mkdirp = require("mkdirp-promise");
const isWindows = require("is-windows");
const IS_WINDOWS = isWindows();
// Always use "junctions" on Windows. Even though support for "symbolic links" was added in Vista+, users by default
// lack permission to create them
const symlinkType = IS_WINDOWS ? 'junction' : 'dir';
const resolveSrc = IS_WINDOWS ? resolveSrcOnWin : resolveSrcOnNonWin;
function resolveSrcOnWin(src, dest) {
return `${path.resolve(src)}\\`;
}
function resolveSrcOnNonWin(src, dest) {
return path.relative(path.dirname(dest), path.resolve(src));
}
function symlinkDir(src, dest) {
return __awaiter(this, void 0, void 0, function* () {
dest = path.resolve(dest);
src = resolveSrc(src, dest);
try {
return yield forceSymlink(src, dest);
}
catch (err) {
if (err.code === 'ENOENT') {
yield mkdirp(path.dirname(dest));
return yield forceSymlink(src, dest);
}
throw err;
}
});
}
/**
* Creates a symlink. Re-link if a symlink already exists at the supplied
* srcPath. API compatible with [`fs#symlink`](https://nodejs.org/api/fs.html#fs_fs_symlink_srcpath_dstpath_type_callback).
*/
function forceSymlink(src, dest) {
return __awaiter(this, void 0, void 0, function* () {
try {
yield fs.symlink(src, dest, symlinkType);
return { reused: false };
}
catch (err) {
if (err.code !== 'EEXIST')
throw err;
const linkString = yield fs.readlink(dest);
if (src === linkString) {
return { reused: true };
}
yield fs.unlink(dest);
return yield forceSymlink(src, dest);
}
});
}
// for backward compatibility
symlinkDir['default'] = symlinkDir;
module.exports = symlinkDir;
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