feat(run): add LERNA_PACKAGE_NAME env var to run command

- ref Lerna PR [#3107](lerna/lerna#3107)
lerna-lite · May 3, 2022 · ae88a0a · ae88a0a
1 parent 816b7cb
commit ae88a0a
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Showing 3 changed files with 18 additions and 4 deletions.
diff --git a/packages/run/README.md b/packages/run/README.md
@@ -37,6 +37,12 @@ $ lerna run --parallel watch
 
 Run an [npm script](https://docs.npmjs.com/misc/scripts) in each package of the workspace that contains that script. A double-dash (`--`) is necessary to pass dashed arguments to the script execution.
 
+The name of the current package is available through the environment variable `LERNA_PACKAGE_NAME`:
+
+```sh
+$ lerna run build \$LERNA_PACKAGE_NAME
+```
+
 ## Options
 
 `lerna run` accepts all [filter flags](https://www.npmjs.com/package/@lerna/filter-options).

diff --git a/packages/run/src/lib/__tests__/npm-run-script.spec.ts b/packages/run/src/lib/__tests__/npm-run-script.spec.ts
@@ -118,7 +118,9 @@ describe('npm-run-script', () => {
         ['run', script, '--bar', 'baz'],
         {
           cwd: config.pkg.location,
-          env: {},
+          env: {
+            LERNA_PACKAGE_NAME: 'qux'
+          },
           pkg: config.pkg,
           reject: true,
           windowsHide: false,
@@ -147,7 +149,9 @@ describe('npm-run-script', () => {
         ['run', script, '--bar', 'baz'],
         {
           cwd: config.pkg.location,
-          env: {},
+          env: {
+            LERNA_PACKAGE_NAME: 'qux'
+          },
           pkg: config.pkg,
           reject: true,
           windowsHide: false,
@@ -177,7 +181,9 @@ describe('npm-run-script', () => {
         ['run', script],
         {
           cwd: config.pkg.location,
-          env: {},
+          env: {
+            LERNA_PACKAGE_NAME: 'qux'
+          },
           pkg: config.pkg,
           reject: false,
           windowsHide: false,

diff --git a/packages/run/src/lib/get-npm-exec-opts.ts b/packages/run/src/lib/get-npm-exec-opts.ts
@@ -3,7 +3,9 @@ import log from 'npmlog';
 
 export function getNpmExecOpts(pkg: Package) {
   // execa automatically extends process.env
-  const env: { [key: string]: string } = {};
+  const env: { [key: string]: string } = {
+    LERNA_PACKAGE_NAME: pkg.name,
+  };
 
   log.silly('getNpmExecOpts', pkg.location);
   return {