1 files changed, 49 insertions, 0 deletions
diff --git a/pkgs/development/tools/yarn2nix-moretea/yarn2nix/internal/fixup_yarn_lock.js b/pkgs/development/tools/yarn2nix-moretea/yarn2nix/internal/fixup_yarn_lock.js
new file mode 100755
index 00000000000..86e92f85208
--- /dev/null
+++ b/pkgs/development/tools/yarn2nix-moretea/yarn2nix/internal/fixup_yarn_lock.js
@@ -0,0 +1,49 @@
+#!/usr/bin/env node
+
+/* Usage:
+ * node fixup_yarn_lock.js yarn.lock
+ */
+
+const fs = require('fs')
+const readline = require('readline')
+
+const urlToName = require('../lib/urlToName')
+
+const yarnLockPath = process.argv[2]
+
+const readFile = readline.createInterface({
+  input: fs.createReadStream(yarnLockPath, { encoding: 'utf8' }),
+
+  // Note: we use the crlfDelay option to recognize all instances of CR LF
+  // ('\r\n') in input.txt as a single line break.
+  crlfDelay: Infinity,
+
+  terminal: false, // input and output should be treated like a TTY
+})
+
+const result = []
+
+readFile
+  .on('line', line => {
+    const arr = line.match(/^ {2}resolved "([^#]+)#([^"]+)"$/)
+
+    if (arr !== null) {
+      const [_, url, shaOrRev] = arr
+
+      const fileName = urlToName(url)
+
+      result.push(`  resolved "${fileName}#${shaOrRev}"`)
+    } else {
+      result.push(line)
+    }
+  })
+  .on('close', () => {
+    fs.writeFile(yarnLockPath, result.join('\n'), 'utf8', err => {
+      if (err) {
+        console.error(
+          'fixup_yarn_lock: fatal error when trying to write to yarn.lock',
+          err,
+        )
+      }
+    })
+  })