feat: allow include/exclude rules to be a string rather than array (#22)

Author: bcoe

Diff for: index.js

@@ -14,6 +14,9 @@ function TestExclude (opts) {
     configFound: false
   }, opts)
 
+  if (typeof this.include === 'string') this.include = [this.include]
+  if (typeof this.exclude === 'string') this.exclude = [this.exclude]
+
   if (!this.include && !this.exclude && this.configKey) {
     assign(this, this.pkgConf(this.configKey, this.configPath))
   }

Diff for: test/test-exclude.js

@@ -183,4 +183,14 @@ describe('testExclude', function () {
       })
     })
   })
+
+  // see: https://github.com/istanbuljs/babel-plugin-istanbul/issues/71
+  it('allows exclude/include rule to be a string', function () {
+    const e = exclude({
+      exclude: 'src/**/*.spec.js',
+      include: 'src/**'
+    })
+    e.shouldInstrument('src/batman/robin/foo.spec.js').should.equal(false)
+    e.shouldInstrument('src/batman/robin/foo.js').should.equal(true)
+  })
 })