1 files changed, 27 insertions, 0 deletions
diff --git a/lib/utils/config/definitions.js b/lib/utils/config/definitions.js
index 009f60a7b..3bb8a4210 100644
--- a/lib/utils/config/definitions.js
+++ b/lib/utils/config/definitions.js
@@ -1142,6 +1142,33 @@ define('location', {
   },
 })
 
+define('lockfile-version', {
+  default: null,
+  type: [null, 1, 2, 3],
+  defaultDescription: `
+    Version 2 if no lockfile or current lockfile version less than or equal to
+    2, otherwise maintain current lockfile version
+  `,
+  description: `
+    Set the lockfile format version to be used in package-lock.json and
+    npm-shrinkwrap-json files.  Possible options are:
+
+    1: The lockfile version used by npm versions 5 and 6.  Lacks some data that
+    is used during the install, resulting in slower and possibly less
+    deterministic installs.  Prevents lockfile churn when interoperating with
+    older npm versions.
+
+    2: The default lockfile version used by npm version 7.  Includes both the
+    version 1 lockfile data and version 3 lockfile data, for maximum
+    determinism and interoperability, at the expense of more bytes on disk.
+
+    3: Only the new lockfile information introduced in npm version 7.  Smaller
+    on disk than lockfile version 2, but not interoperable with older npm
+    versions.  Ideal if all users are on npm version 7 and higher.
+  `,
+  flatten,
+})
+
 define('loglevel', {
   default: 'notice',
   type: [