WIP

src/compiler/tsbuild.ts

@@ -0,0 +1,69 @@
+namespace ts {
+/*
+    interface BuildContext {
+        unchangedOutputs: FileMap<number>;
+    }
+
+
+
+    interface FileMap<T> {
+        setValue(fileName: string, value: T): void;
+        getValue(fileName: string): T | never;
+        getValueOrUndefined(fileName: string): T | undefined;
+        getValueOrDefault(fileName: string, defaultValue: T): T;
+        tryGetValue(fileName: string): [false, undefined] | [true, T];
+    }
+
+    function createFileMap<T>(): FileMap<T> {
+        const lookup: { [key: string]: T } = Object.create(null);
+
+        return {
+            setValue,
+            getValue,
+            getValueOrUndefined,
+            getValueOrDefault,
+            tryGetValue
+        }
+
+        function setValue(fileName: string, value: T) {
+            lookup[normalizePath(fileName)] = value;
+        }
+
+        function getValue(fileName: string): T | never {
+            const f = normalizePath(fileName);
+            if (f in lookup) {
+                return lookup[f];
+            } else {
+                throw new Error(`No value corresponding to ${fileName} exists in this map`);
+            }
+        }
+
+        function getValueOrUndefined(fileName: string): T | undefined {
+            const f = normalizePath(fileName);
+            if (f in lookup) {
+                return lookup[f];
+            } else {
+                return undefined;
+            }
+        }
+
+        function getValueOrDefault(fileName: string, defaultValue: T): T {
+            const f = normalizePath(fileName);
+            if (f in lookup) {
+                return lookup[f];
+            } else {
+                return defaultValue;
+            }
+        }
+
+        function tryGetValue(fileName: string): [false, undefined] | [true, T] {
+            const f = normalizePath(fileName);
+            if (f in lookup) {
+                return [true as true, lookup[f]];
+            } else {
+                return [false as false, undefined];
+            }
+        }
+    }
+    */
+}

src/compiler/tsconfig.json

@@ -46,6 +46,7 @@
         "resolutionCache.ts",
         "watch.ts",
         "commandLineParser.ts",
-        "tsc.ts"
+        "tsc.ts",
+        "tsbuild.ts"
     ]
 }