use gulp for typescript compiling to delete migrations folder for each new transpilation

gulpfile.js

@@ -0,0 +1,39 @@
+const { dest, watch } = require('gulp');
+const ts = require('gulp-typescript');
+const fs = require('fs');
+const path = require('path');
+
+const tsProject = ts.createProject('tsconfig.json');
+
+function deleteFolderRecursive(folder) {
+  if (fs.existsSync(folder)) {
+    fs.readdirSync(folder).forEach(function(file) {
+      const currPath = path.resolve(folder, file);
+      if (fs.lstatSync(currPath).isDirectory()) {
+        deleteFolderRecursive(currPath);
+      } else {
+        fs.unlinkSync(currPath);
+      }
+    });
+    fs.rmdirSync(folder);
+  }
+}
+
+function removeCompiledMigrations() {
+  const migrationsDir = path.resolve('dist/main/migrations');
+  deleteFolderRecursive(migrationsDir);
+}
+
+function tsc() {
+  removeCompiledMigrations();
+
+  return tsProject
+    .src()
+    .pipe(tsProject())
+    .js.pipe(dest('dist'));
+}
+
+exports.tsc = tsc;
+exports['tsc:watch'] = () => {
+  watch('./src/**/*.ts', { ignoreInitial: false }, tsc);
+};

package.json

@@ -11,7 +11,7 @@
     "dev": "electron . --enable-logging",
     "rebuild": "electron-rebuild -f -b -t prod,dev,optional",
     "typeorm:migrate": "typeorm migration:run -c library",
-    "tsc": "tsc --watch",
+    "tsc": "gulp tsc:watch",
     "webpack": "webpack --watch",
     "eslint-check": "eslint --print-config . | eslint-config-prettier-check",
     "eslint": "eslint .",
@@ -28,6 +28,9 @@
     "eslint": "^5.16.0",
     "eslint-config-prettier": "^5.0.0",
     "eslint-plugin-prettier": "^3.1.0",
+    "gulp": "^4.0.2",
+    "gulp-cli": "^2.2.0",
+    "gulp-typescript": "^5.0.1",
     "prettier": "^1.18.2",
     "sqlite3": "^4.0.9",
     "svelte": "^3.5.1",

tsconfig.json

@@ -13,9 +13,7 @@
       {
         "name": "typescript-tslint-plugin"
       }
-    ],
+    ]
-    "rootDir": "src",
-    "outDir": "dist"
   },
   "include": ["src/**/*"]
 }