1 files changed, 72 insertions, 0 deletions
diff --git a/node_modules/shelljs/src/ln.js b/node_modules/shelljs/src/ln.js
new file mode 100644
index 000000000..7393d9fcd
--- /dev/null
+++ b/node_modules/shelljs/src/ln.js
@@ -0,0 +1,72 @@
+var fs = require('fs');
+var path = require('path');
+var common = require('./common');
+
+common.register('ln', _ln, {
+  cmdOptions: {
+    's': 'symlink',
+    'f': 'force',
+  },
+});
+
+//@
+//@ ### ln([options,] source, dest)
+//@ Available options:
+//@
+//@ + `-s`: symlink
+//@ + `-f`: force
+//@
+//@ Examples:
+//@
+//@ ```javascript
+//@ ln('file', 'newlink');
+//@ ln('-sf', 'file', 'existing');
+//@ ```
+//@
+//@ Links source to dest. Use -f to force the link, should dest already exist.
+function _ln(options, source, dest) {
+  if (!source || !dest) {
+    common.error('Missing <source> and/or <dest>');
+  }
+
+  source = String(source);
+  var sourcePath = path.normalize(source).replace(RegExp(path.sep + '$'), '');
+  var isAbsolute = (path.resolve(source) === sourcePath);
+  dest = path.resolve(process.cwd(), String(dest));
+
+  if (fs.existsSync(dest)) {
+    if (!options.force) {
+      common.error('Destination file exists', { continue: true });
+    }
+
+    fs.unlinkSync(dest);
+  }
+
+  if (options.symlink) {
+    var isWindows = common.platform === 'win';
+    var linkType = isWindows ? 'file' : null;
+    var resolvedSourcePath = isAbsolute ? sourcePath : path.resolve(process.cwd(), path.dirname(dest), source);
+    if (!fs.existsSync(resolvedSourcePath)) {
+      common.error('Source file does not exist', { continue: true });
+    } else if (isWindows && fs.statSync(resolvedSourcePath).isDirectory()) {
+      linkType = 'junction';
+    }
+
+    try {
+      fs.symlinkSync(linkType === 'junction' ? resolvedSourcePath : source, dest, linkType);
+    } catch (err) {
+      common.error(err.message);
+    }
+  } else {
+    if (!fs.existsSync(source)) {
+      common.error('Source file does not exist', { continue: true });
+    }
+    try {
+      fs.linkSync(source, dest);
+    } catch (err) {
+      common.error(err.message);
+    }
+  }
+  return '';
+}
+module.exports = _ln;