Add format script

Author: cdimitroulas

README.md

@@ -35,6 +35,12 @@ are using it within `package.json` simply write `typescript-scripts [script name
 
   All the usual eslint flags can be passed to this script, they will be passed on to eslint.
 
+- `typescript-scripts format`
+
+  Formats all the files in the repository using prettier.
+
+  TODO - allow passing an argument to configure which files/folders should be formatted
+
 - compile (TODO)
 
 - test (TODO)

index.ts

@@ -2,7 +2,7 @@
 
 "use strict";
 
-import { init, lint } from "./scripts";
+import { format, init, lint } from "./scripts";
 
 const args = process.argv.slice(2);
 const scriptName = args[0];
@@ -20,6 +20,11 @@ switch (scriptName) {
     process.exit(0);
     break;
 
+  case "format":
+    format();
+    process.exit(0);
+    break;
+
   case "lint": {
     const status = lint();
     process.exit(status);

scripts/format.ts

@@ -0,0 +1,22 @@
+import fs from "fs";
+import path from "path";
+import spawn from "cross-spawn";
+
+const appDirectory = fs.realpathSync(process.cwd());
+// const args = process.argv.slice(3);
+
+function format(): number {
+  const result = spawn.sync(
+    path.join(appDirectory, "./node_modules/.bin/prettier"),
+    ["--write", "./**/*"],
+    { stdio: "inherit" }
+  );
+
+  if (result.error) {
+    console.error(result.error);
+  }
+
+  return typeof result.status === "number" ? result.status : 1;
+}
+
+export default format;

scripts/index.ts

@@ -1,4 +1,5 @@
+import format from "./format";
 import init from "./init";
 import lint from "./lint";
 
-export { init, lint };
+export { format, init, lint };