fix: support import.meta.env and import.meta.env?.prop

src/plugins/import-meta-env.ts

@@ -1,42 +1,9 @@
 /**
- * Based on https://github.com/iendeavor/import-meta-env/tree/main/packages/babel 0.4.2 (MIT)
-
-Modified to use runtime only without dotenv dependency
-
----
-
-MIT License
-
-Copyright (c) 2021 Ernest
-
-Permission is hereby granted, free of charge, to any person obtaining a copy
-of this software and associated documentation files (the "Software"), to deal
-in the Software without restriction, including without limitation the rights
-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-copies of the Software, and to permit persons to whom the Software is
-furnished to do so, subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in all
-copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
-SOFTWARE.
+ * Forked from https://github.com/iendeavor/import-meta-env/tree/main/packages/babel 0.4.2 (MIT License - Copyright (c) 2021 Ernest)
  */
 
-import type BabelCore from "@babel/core";
 import type { PluginObj } from "@babel/core";
-
-export const accessor = `process.env`;
-
-const replaceEnvForRuntime = (
-  template: typeof BabelCore.template,
-  property: string,
-) => template.expression.ast(`${accessor}.${property}`);
+import type { MemberExpression, MetaProperty } from "@babel/types";
 
 export function importMetaEnvPlugin({ template, types }: any) {
   return <PluginObj>{
@@ -47,58 +14,33 @@ export function importMetaEnvPlugin({ template, types }: any) {
           return;
         }
 
-        // {}.{}
-        if (!types.isMemberExpression(path.parentPath)) {
+        // {}.{} or {}?.{} (meta.env or meta?.env)
+        if (
+          !types.isMemberExpression(path.parentPath) &&
+          !types.isOptionalMemberExpression(path.parentPath)
+        ) {
           return;
         }
-        // {}.{}.{}
+
+        // {}.{}.{} (import.meta.env)
         if (!types.isMemberExpression(path.parentPath.node)) {
           return;
         }
-        // {}.{}.{}.{}
-        // @ts-ignore
-        if (!types.isMemberExpression(path.parentPath.node.object)) {
-          return;
-        }
 
-        // {}.{}.{}.PROPERTY
-        // @ts-ignore
-        if (path.parentPath.computed) {
-          return;
-        }
-        // @ts-ignore
-        if (!types.isIdentifier(path.parentPath.node.property)) {
-          return;
-        }
+        const parentNode = path.parentPath.node as MemberExpression;
 
-        // {}.{}.env.PROPERTY
-        // @ts-ignore
-        if (!types.isIdentifier(path.parentPath.node.object.property)) {
-          return;
-        }
-        // @ts-ignore
-        if (path.parentPath.node.object.property.name !== "env") {
+        if (!types.isMetaProperty(parentNode.object)) {
           return;
         }
 
-        // import.meta.env.PROPERTY
-        // @ts-ignore
-        if (!types.isMetaProperty(path.parentPath.node.object.object)) {
-          return;
-        }
-        // @ts-ignore
-        if (path.parentPath.node.object.object.property.name !== "meta") {
-          return;
-        }
-        // @ts-ignore
-        if (path.parentPath.node.object.object.meta.name !== "import") {
-          return;
-        }
+        const parentNodeObjMeta = parentNode.object as MetaProperty;
 
-        path.parentPath.replaceWith(
-          // @ts-ignore
-          replaceEnvForRuntime(template, path.parentPath.node.property.name),
-        );
+        if (
+          parentNodeObjMeta.meta.name === "import" ||
+          parentNodeObjMeta.property.name === "meta"
+        ) {
+          path.parentPath.replaceWith(template.expression.ast("process.env"));
+        }
       },
     },
   };

test/__snapshots__/fixtures.test.ts.snap

@@ -5,8 +5,12 @@ exports[`fixtures > async > stdout 1`] = `"works"`;
 exports[`fixtures > circular > stdout 1`] = `"a b c"`;
 
 exports[`fixtures > env > stdout 1`] = `
-"process.env.TEST true
-import.meta.env.TEST true"
+"process.env true
+process.env.TEST true
+process.env?.TEST true
+import.meta true
+import.meta.env.TEST true
+import.meta.env?.TEST true"
 `;
 
 exports[`fixtures > error-parse > stderr 1`] = `

test/fixtures/env/index.ts

@@ -1,3 +1,10 @@
+console.log("process.env", Object.keys(process.env).includes("TEST"));
 console.log("process.env.TEST", process.env.TEST);
+console.log("process.env?.TEST", process.env?.TEST);
+
+// @ts-ignore
+console.log("import.meta", Object.keys(import.meta.env).includes("TEST"));
 // @ts-ignore
 console.log("import.meta.env.TEST", import.meta.env.TEST);
+// @ts-ignore
+console.log("import.meta.env?.TEST", import.meta.env?.TEST);