build: fix yarn serve

Author: felixfbecker

package.json

@@ -95,7 +95,8 @@
     "test": "TS_NODE_COMPILER_OPTIONS='{\"module\":\"commonjs\"}' mocha --require ts-node/register --require source-map-support/register --opts mocha.opts",
     "cover": "TS_NODE_COMPILER_OPTIONS='{\"module\":\"commonjs\"}' nyc --require ts-node/register --require source-map-support/register --all mocha --opts mocha.opts --timeout 10000",
     "build": "parcel build --no-minify --out-file extension.js src/extension.ts",
-    "serve": "parcel serve --no-hmr --out-file extension.js src/extension.ts",
+    "symlink-package": "mkdirp dist && lnfs ./package.json ./dist/package.json",
+    "serve": "yarn run symlink-package && parcel serve --no-hmr --out-file extension.js src/extension.ts",
     "watch:typecheck": "tsc -p tsconfig.json -w",
     "watch:build": "tsc -p tsconfig.dist.json -w",
     "sourcegraph:prepublish": "yarn typecheck && yarn test && yarn build"
@@ -117,6 +118,8 @@
     "@types/sinon": "^7.0.8",
     "eslint": "^6.8.0",
     "husky": "^1.3.1",
+    "lnfs-cli": "^2.1.0",
+    "mkdirp": "^1.0.3",
     "mocha": "^6.0.2",
     "nyc": "^13.3.0",
     "parcel-bundler": "^1.11.0",