Implementing --deps flag

- Adding a ModuleId type alias to specify original url or local file of
dependency
- Modifying ModuleMetaData class to contain ModuleId
- Adding a --deps flag

3 files changed, 26 insertions, 5 deletions

diff --git a/js/compiler.ts b/js/compiler.ts
index eaf64ce87..d92838652 100644
--- a/js/compiler.ts
+++ b/js/compiler.ts
@@ -38,6 +38,11 @@ type ContainingFile = string;
  */
 type ModuleFileName = string;
 /**
+ * The original resolved resource name.
+ * Path to cached module file or URL from which dependency was retrieved
+ */
+type ModuleId = string;
+/**
  * The external name of a module - could be a URL or could be a relative path.
  * Examples `http://gist.github.com/somefile.ts` or `./somefile.ts`
  */
@@ -84,6 +89,7 @@ export class ModuleMetaData implements ts.IScriptSnapshot {
   public scriptVersion = "";
 
   constructor(
+    public readonly moduleId: ModuleId,
     public readonly fileName: ModuleFileName,
     public readonly sourceCode = "",
     public outputCode = ""
@@ -415,7 +421,7 @@ export class DenoCompiler implements ts.LanguageServiceHost {
     );
     this._gatherDependencies(moduleMetaData);
     const dependencies = this._runQueue.map(
-      moduleMetaData => moduleMetaData.fileName
+      moduleMetaData => moduleMetaData.moduleId
     );
     // empty the run queue, to free up references to factories we have collected
     // and to ensure that if there is a further invocation of `.run()` the
@@ -491,6 +497,7 @@ export class DenoCompiler implements ts.LanguageServiceHost {
     if (fileName && this._moduleMetaDataMap.has(fileName)) {
       return this._moduleMetaDataMap.get(fileName)!;
     }
+    let moduleId: ModuleId = "";
     let sourceCode: string | undefined;
     let outputCode: string | undefined;
     if (
@@ -518,6 +525,7 @@ export class DenoCompiler implements ts.LanguageServiceHost {
           containingFile
         );
       }
+      moduleId = fetchResponse.moduleName || "";
       fileName = fetchResponse.filename || undefined;
       sourceCode = fetchResponse.sourceCode || undefined;
       outputCode = fetchResponse.outputCode || undefined;
@@ -535,7 +543,12 @@ export class DenoCompiler implements ts.LanguageServiceHost {
     if (fileName && this._moduleMetaDataMap.has(fileName)) {
       return this._moduleMetaDataMap.get(fileName)!;
     }
-    const moduleMetaData = new ModuleMetaData(fileName, sourceCode, outputCode);
+    const moduleMetaData = new ModuleMetaData(
+      moduleId,
+      fileName,
+      sourceCode,
+      outputCode
+    );
     this._moduleMetaDataMap.set(fileName, moduleMetaData);
     return moduleMetaData;
   }
diff --git a/js/compiler_test.ts b/js/compiler_test.ts
index d27818c9c..c056cf932 100644
--- a/js/compiler_test.ts
+++ b/js/compiler_test.ts
@@ -112,13 +112,13 @@ const moduleMap: {
 } = {
   "/root/project": {
     "foo/bar.ts": mockModuleInfo(
-      "foo/bar",
+      "/root/project/foo/bar.ts",
       "/root/project/foo/bar.ts",
       fooBarTsSource,
       null
     ),
     "foo/baz.ts": mockModuleInfo(
-      "foo/baz",
+      "/root/project/foo/baz.ts",
       "/root/project/foo/baz.ts",
       fooBazTsSource,
       fooBazTsOutput
@@ -127,7 +127,7 @@ const moduleMap: {
   },
   "/root/project/foo/baz.ts": {
     "./bar.ts": mockModuleInfo(
-      "foo/bar",
+      "/root/project/foo/bar.ts",
       "/root/project/foo/bar.ts",
       fooBarTsSource,
       fooBarTsOutput
diff --git a/js/main.ts b/js/main.ts
index 94ded73e1..538d0cc27 100644
--- a/js/main.ts
+++ b/js/main.ts
@@ -85,5 +85,13 @@ export default function denoMain() {
     os.exit(1);
   }
 
+  const printDeps = startResMsg.depsFlag();
+  if (printDeps) {
+    for (const dep of compiler.getModuleDependencies(inputFn, `${cwd}/`)) {
+      console.log(dep);
+    }
+    os.exit(0);
+  }
+
   compiler.run(inputFn, `${cwd}/`);
 }