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kitabcitab/node_modules/tsconfig-paths/src/filesystem.ts

@@ -0,0 +1,87 @@
+import * as fs from "fs";
+
+/**
+ * Typing for the fields of package.json we care about
+ */
+export interface PackageJson {
+  [key: string]: string;
+}
+
+/**
+ * A function that json from a file
+ */
+export interface ReadJsonSync {
+  // tslint:disable-next-line:no-any
+  (packageJsonPath: string): any | undefined;
+}
+
+export interface FileExistsSync {
+  (name: string): boolean;
+}
+
+export interface FileExistsAsync {
+  (path: string, callback: (err?: Error, exists?: boolean) => void): void;
+}
+
+export interface ReadJsonAsyncCallback {
+  // tslint:disable-next-line:no-any
+  (err?: Error, content?: any): void;
+}
+
+export interface ReadJsonAsync {
+  (path: string, callback: ReadJsonAsyncCallback): void;
+}
+
+export function fileExistsSync(path: string): boolean {
+  try {
+    const stats = fs.statSync(path);
+    return stats.isFile();
+  } catch (err) {
+    // If error, assume file did not exist
+    return false;
+  }
+}
+
+/**
+ * Reads package.json from disk
+ * @param file Path to package.json
+ */
+// tslint:disable-next-line:no-any
+export function readJsonFromDiskSync(packageJsonPath: string): any | undefined {
+  if (!fs.existsSync(packageJsonPath)) {
+    return undefined;
+  }
+  return require(packageJsonPath);
+}
+
+export function readJsonFromDiskAsync(
+  path: string,
+  // tslint:disable-next-line:no-any
+  callback: (err?: Error, content?: any) => void
+): void {
+  fs.readFile(path, "utf8", (err, result) => {
+    // If error, assume file did not exist
+    if (err || !result) {
+      return callback();
+    }
+    const json = JSON.parse(result);
+    return callback(undefined, json);
+  });
+}
+
+export function fileExistsAsync(
+  path2: string,
+  callback2: (err?: Error, exists?: boolean) => void
+): void {
+  fs.stat(path2, (err: Error, stats: fs.Stats) => {
+    if (err) {
+      // If error assume file does not exist
+      return callback2(undefined, false);
+    }
+    callback2(undefined, stats ? stats.isFile() : false);
+  });
+}
+
+export function removeExtension(path: string): string {
+  return path.substring(0, path.lastIndexOf(".")) || path;
+}