add enableInDevelopment flag

Author: David Sheldrick

README.md

@@ -100,10 +100,20 @@ interface ObfuscatorOptions {
 
 Iff true, prints a list of files being obfuscated
 
+#### Default value: `false`
+
 ### `emitObfuscatedFiles: boolean`
 
 Iff true, emits the obfuscated versions of files alongside their originals, for comparison.
 
+#### Default value: `false`
+
+### `enableInDevelopment: boolean`
+
+Iff true, enables obfuscation in development mode. This is true by default.
+
+#### Default value: `false`
+
 ## License
 
 MIT

src/getMetroTransformer.ts

@@ -18,7 +18,11 @@ export interface MetroTransformer {
   transform(props: {
     filename: string
     src: string
-    options: object
+    options: {
+      dev?: boolean
+      retainLines?: boolean
+      // others unused
+    }
   }): MetroTransformerResult
   getCacheKey?(): string
 }

src/obfuscatingTransformer.ts

@@ -33,6 +33,7 @@ export interface ObfuscatingTransformerOptions {
   obfuscatorOptions?: JavaScriptObfuscator.Options
   trace?: boolean
   emitObfuscatedFiles?: boolean
+  enableInDevelopment?: boolean
 }
 
 const sourceDir = path.join(appRootPath, "src")
@@ -55,6 +56,11 @@ export function obfuscatingTransformer({
   return {
     transform(props) {
       const result = upstreamTransformer.transform(props)
+
+      if (props.options.dev && !otherOptions.enableInDevelopment) {
+        return result
+      }
+
       const resultCanBeObfuscated = result.code || result.ast
 
       if (resultCanBeObfuscated && filter(props.filename, props.src)) {