Converted models and services to TypeScript

packages/lib/models/Migration.ts

@@ -0,0 +1,26 @@
+import BaseModel from '../BaseModel';
+
+const migrationScripts: Record<number, any> = {
+	20: require('../migrations/20.js'),
+	27: require('../migrations/27.js'),
+	33: require('../migrations/33.js'),
+};
+
+export default class Migration extends BaseModel {
+	static tableName() {
+		return 'migrations';
+	}
+
+	static modelType() {
+		return BaseModel.TYPE_MIGRATION;
+	}
+
+	static migrationsToDo() {
+		return this.modelSelectAll('SELECT * FROM migrations ORDER BY number ASC');
+	}
+
+	static script(number: number) {
+		if (!migrationScripts[number]) throw new Error('Migration script has not been added to "migrationScripts" array');
+		return migrationScripts[number];
+	}
+}