feat(node-resolve): set development or production condition

rollup · Dec 2, 2024 · 5fd201c · 5fd201c
1 parent 92daef0
commit 5fd201c
Show file tree

Hide file tree

Showing 2 changed files with 12 additions and 3 deletions.
diff --git a/packages/node-resolve/README.md b/packages/node-resolve/README.md
@@ -53,7 +53,7 @@ This plugin supports the package entrypoints feature from node js, specified in
 Type: `Array[...String]`<br>
 Default: `[]`
 
-Additional conditions of the package.json exports field to match when resolving modules. By default, this plugin looks for the `['default', 'module', 'import']` conditions when resolving imports.
+Additional conditions of the package.json exports field to match when resolving modules. By default, this plugin looks for the `['default', 'module', 'import', 'development|production']` conditions when resolving imports. If neither the `development` or `production` conditions are provided it will default to `production` - or `development` if `NODE_ENV` is set to a value other than `production`.
 
 When using `@rollup/plugin-commonjs` v16 or higher, this plugin will use the `['default', 'module', 'require']` conditions when resolving require statements.
 

diff --git a/packages/node-resolve/src/index.js b/packages/node-resolve/src/index.js
@@ -52,8 +52,17 @@ export function nodeResolve(opts = {}) {
 
   const options = { ...defaults, ...opts };
   const { extensions, jail, moduleDirectories, modulePaths, ignoreSideEffectsForRoot } = options;
-  const conditionsEsm = [...baseConditionsEsm, ...(options.exportConditions || [])];
-  const conditionsCjs = [...baseConditionsCjs, ...(options.exportConditions || [])];
+  const exportConditions = options.exportConditions || [];
+  const devProdCondition =
+    exportConditions.includes('development') || exportConditions.includes('production')
+      ? []
+      : [
+          process.env.NODE_ENV && process.env.NODE_ENV !== 'production'
+            ? 'development'
+            : 'production'
+        ];
+  const conditionsEsm = [...baseConditionsEsm, ...exportConditions, ...devProdCondition];
+  const conditionsCjs = [...baseConditionsCjs, ...exportConditions, ...devProdCondition];
   const packageInfoCache = new Map();
   const idToPackageInfo = new Map();
   const mainFields = getMainFields(options);