Adds a quick migration script

Author: orta

README.md

@@ -25,6 +25,14 @@ To test:
 npm run test
 ```
 
+To deploy:
+
+```sh
+npm run migrate
+```
+
+The script will look in for a clone of the TypeScript repo in "../TypeScript", or "./TypeScript" to move the generated files in. 
+
 ## Contribution Guidelines
 
 The `dom.generated.d.ts`, `webworker.generated.d.ts` and `dom.iterable.generated.d.ts` files from the TypeScript repo are used as baselines.

package.json

@@ -7,7 +7,8 @@
     "fetch-mdn": "npm run build && node ./lib/mdnfetcher.js",
     "fetch": "echo This could take a few minutes... && npm run fetch-idl && npm run fetch-mdn",
     "baseline-accept": "cpx \"generated\\*\" baselines\\",
-    "test": "tsc -p ./tsconfig.json && node ./lib/index.js && node ./lib/test.js"
+    "test": "tsc -p ./tsconfig.json && node ./lib/index.js && node ./lib/test.js",
+    "migrate": "node ./lib/migrate-to-tsc.js"
   },
   "dependencies": {
     "@types/jsdom": "^16.2.4",

src/migrate-to-tsc.ts

@@ -0,0 +1,21 @@
+// Mainly a quick script to migrate the generated files into the
+// lib folder of a TypeScript clone. 
+//
+// node ./lib/migrate-to-tsc.js [optional/file/path/to/tsc]
+
+import { existsSync, readdirSync, readFileSync, writeFileSync } from "fs"
+import { join } from "path"
+
+const maybeTSWorkingDir = [process.argv[2],  "../TypeScript", "TypeScript"]
+const tscWD = maybeTSWorkingDir.find(wd => existsSync(wd))
+
+if (!tscWD) throw new Error("Could not find a TypeScript clone to put the generated files in.")
+
+const generatedFiles = readdirSync("generated")
+generatedFiles.forEach(file => {
+    const contents = readFileSync(join("generated", file) , "utf8")
+    const newFilePath = join(tscWD, "lib", file.replace(".generated", ""))
+    writeFileSync(newFilePath, contents)
+})
+
+console.log(`Moved ${generatedFiles.map(f => f.replace(".generated", "")).join(", ")} to '${tscWD}'.`)