Move to @codemirror/buildhelper

Author: marijnh

.gitignore

@@ -1,9 +1,6 @@
 /node_modules
 package-lock.json
 /dist
-/src/*.js
-/src/*.d.ts
-/src/*.d.ts.map
 /test/*.js
 /test/*.d.ts
 /test/*.d.ts.map

package.json

@@ -4,7 +4,7 @@
   "description": "JavaScript language support for the CodeMirror code editor",
   "scripts": {
     "test": "mocha test/test-*.js",
-    "prepare": "tsc -p tsconfig.local.json && rollup -c"
+    "prepare": "cm-buildhelper src/index.ts"
   },
   "keywords": [
     "editor",
@@ -35,9 +35,7 @@
     "lezer-javascript": "^0.13.0"
   },
   "devDependencies": {
-    "rollup": "^2.35.1",
-    "rollup-plugin-dts": "^2.0.1",
-    "typescript": "^4.1.3",
+    "@codemirror/buildhelper": "^0.1.0",
     "@types/mocha": "^5.2.0",
     "ist": "^1.1.6",
     "lezer": "^0.13.0",