feat: add forceIsolatedModules

README.md

@@ -108,6 +108,8 @@ Please note that ATL works **the same way as a TypeScript compiler** as much as
 
 **ADVICE**: Typically you want your `files` section to include only entry points.
 
+**ADVICE**: The loader works faster if you use `isolatedModules` or `forceIsolatedModules` options.
+
 ## Loader options
 
 ### silent *(boolean) (default=false)*
@@ -138,6 +140,10 @@ Specifies the path to a TS config file. This is useful when you have multiple co
 
 Use this setting to disable type checking.
 
+### forceIsolatedModules *(boolean)*
+
+Use this setting to disable dependent module recompilation.
+
 ### ignoreDiagnostics *(number[]) (default=[])*
 
 You can squelch certain TypeScript errors by specifying an array of [diagnostic codes](https://github.com/Microsoft/TypeScript/blob/master/src/compiler/diagnosticMessages.json) to ignore.

src/index.ts

@@ -93,14 +93,19 @@ function compiler(loader: Loader, text: string): void {
 
     transformation
         .then(({cached, result}) => {
-            if (!instance.compilerConfig.options.isolatedModules && result.deps) {
+            const isolated =
+                instance.loaderConfig.forceIsolatedModules ||
+                instance.compilerConfig.options.isolatedModules;
+
+            if (!isolated && result.deps) {
                 // If our modules are isolated we don't need to recompile all the deps
                 result.deps.forEach(dep => loader.addDependency(path.normalize(dep)));
             }
             if (cached) {
                 // Update file in checker in case we read it from the cache
                 instance.checker.updateFile(fileName, text);
             }
+
             return result;
         })
         .then(({text, map}) => {

src/instance.ts

@@ -39,6 +39,9 @@ export interface Compiler {
 
 export interface Loader {
     _compiler: Compiler;
+    _module: {
+        meta: any
+    };
     cacheable: () => void;
     query: string;
     async: () => (err: Error, source?: string, map?: string) => void;

src/interfaces.ts

@@ -11,6 +11,7 @@ export interface LoaderConfig {
     compiler?: string;
     configFileName?: string;
     configFileContent?: string;
+    forceIsolatedModules?: boolean;
     transpileOnly?: boolean;
     ignoreDiagnostics?: number[];
     compilerOptions?: ts.CompilerOptions;