feat: Support turning off node_modules default exclude via flag (#172)

Author: hershmire

.gitignore

@@ -31,6 +31,7 @@ build/Release
 
 # Dependency directories
 node_modules
+!fixtures/node_modules
 jspm_packages
 
 # Optional npm cache directory

fixtures/node_modules/should-cover.js

@@ -30,7 +30,9 @@ function makeShouldSkip () {
  // nyc was configured in a parent process (keep these settings).
  config = {
  include: nycConfig.include,
- exclude: nycConfig.exclude
+ exclude: nycConfig.exclude,
+ // Make sure this is true unless explicitly set to `false`. `undefined` is still `true`.
+ excludeNodeModules: nycConfig.excludeNodeModules !== false
  }
  } else {
  // fallback to loading config from key in package.json.

fixtures/node_modules/should-not-cover.js

@@ -30,6 +30,32 @@ describe('babel-plugin-istanbul', function () {
  result.code.should.not.match(/statementMap/)
  })
 
+ context('local node_modules', function () {
+ it('should instrument file if shouldSkip returns false', function () {
+ var result = babel.transformFileSync('./fixtures/node_modules/should-cover.js', {
+ plugins: [
+ [makeVisitor({ types: babel.types }), {
+ excludeNodeModules: false,
+ exclude: ['node_modules/**'],
+ include: ['fixtures/node_modules/should-cover.js']
+ }]
+ ]
+ })
+ result.code.should.match(/statementMap/)
+ })
+
+ it('should not instrument file if shouldSkip returns true', function () {
+ var result = babel.transformFileSync('./fixtures/node_modules/should-not-cover.js', {
+ plugins: [
+ [makeVisitor({ types: babel.types }), {
+ include: ['fixtures/node_modules/should-not-cover.js']
+ }]
+ ]
+ })
+ result.code.should.not.match(/statementMap/)
+ })
+ })
+
  it('should call onCover callback', function () {
  var args
  babel.transformFileSync('./fixtures/plugin-should-cover.js', {