esmock - npm Package Compare versions

Comparing version 0.1.0 to 0.2.0

package.json

 {
   "name": "esmock",
-  "version": "0.1.0",
+  "version": "0.2.0",
   "license": "MIT",
@@ -5,0 +5,0 @@ "readmeFilename": "README.md",

README.md

@@ -50,4 +50,6 @@ esmock
  * 0.1.0 _Apr.10.2021_
-   * adds support for native es modules
+   * adds support for native esm modules
+ * 0.2.0 _Apr.10.2021_
+   * adds support for mocking core modules such as fs and path
 
 [0]: http://www.bumblehead.com "bumblehead"

spec/esmock.spec.js

@@ -139,1 +139,14 @@ import test from 'ava';
 });
+
+test('should mock core module', async t => {
+  const usesCoreModule = await esmock('./local/usesCoreModule.js', {
+    fs : {
+      existsSync : () => true,
+      readFileSync : filepath => filepath === 'checkfilepath.js'
+        ? 'success'
+        : filepath
+    }
+  });
+
+  t.is(usesCoreModule.readPath('checkfilepath.js'), 'success');
+});

src/esmockModule.js

@@ -7,6 +7,4 @@ import fs from 'fs';
   esmockCacheSet,
-  
   esmockCacheResolvedPathGet,
   esmockCacheResolvedPathSet,
-
   esmockCacheResolvedPathIsESMGet,
@@ -16,6 +14,8 @@ esmockCacheResolvedPathIsESMSet
 
-const esmockModuleApply = (definitionLive, definitionMock) => {
+const esmockModuleApply = (definitionLive, definitionMock, definitionPath) => {
   const isDefaultNamespace = o => typeof o === 'object' && 'default' in o;
-  const definition = Object.assign(
-    {}, definitionLive, definitionMock);  
+  const isCorePath = !/\//.test(definitionPath);
+  const definition = isCorePath
+    ? Object.assign({ default : definitionMock }, definitionMock)
+    : Object.assign({}, definitionLive, definitionMock);
   const isDefaultLive = isDefaultNamespace(definitionLive);
@@ -37,3 +37,3 @@ const isDefaultMock = isDefaultNamespace(definitionMock);
       // is nested default, sometimes generated by babel
-      if ( isDefaultNamespace( definition.default ) ) {
+      if (isDefaultNamespace(definition.default)) {
         definition.default = definitionMock;
@@ -61,4 +61,4 @@ definition.default.default = definitionMock;
 
-  isesm = esmockModuleESMRe.test(
-    fs.readFileSync(mockPathFull, 'utf-8'));
+  isesm = /^\//.test(mockPathFull)
+    && esmockModuleESMRe.test(fs.readFileSync(mockPathFull, 'utf-8'));
 
@@ -98,6 +98,8 @@ esmockCacheResolvedPathIsESMSet(mockPathFull, isesm);
   const isesm = esmockModuleIsESM(mockPathFull);
+  const isCorePath = !/\//.test(mockPathFull);
   const mockDefinitionFinal = esmockModuleApply(
-    await import(mockPathFull), mockDef);
+    await import(mockPathFull), mockDef, mockPathFull);
 
-  const mockModuleKey = `file://${mockPathFull}?` + [
+  const mockModuleProtocol = isCorePath ? 'node:' : 'file://';
+  const mockModuleKey = `${mockModuleProtocol}${mockPathFull}?` + [
     'esmockKey=' + esmockKey,
@@ -104,0 +106,0 @@ 'esmockModuleKey=' + key,

New alerts

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License

This package is not allowed per your license policy. Review the package's license to ensure compliance.

Found 1 instance in 1 package

Fixed alerts

License Policy Violation

License

This package is not allowed per your license policy. Review the package's license to ensure compliance.

Found 1 instance in 1 package

Major refactor

Supply chain risk

Package has recently undergone a major refactor. It may be unstable or indicate significant internal changes. Use caution when updating to versions that include significant changes.

Found 1 instance in 1 package

Improved metrics

Total package byte prevSize

20195

increased by4.5%

Number of package files

17

increased by6.25%

Lines of code

485

increased by4.08%

Number of lines in readme file

55

increased by3.77%

Number of medium supply chain risk alerts

0

decreased by-100%

Worsened metrics

Number of low supply chain risk alerts

2

increased by100%

No dependency changes