Add types for mongration (#29843)

* Add types for mongration

* Make MigrationResponse status type more explicit

types/mongration/index.d.ts

@@ -0,0 +1,35 @@
+// Type definitions for mongration 1.0
+// Project: https://github.com/awapps/mongration#readme
+// Definitions by: Anton Lobashev <https://github.com/soulthreads>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+// TypeScript Version: 2.3
+
+import { Db } from 'mongodb';
+
+export interface DbConfig {
+    hosts?: string;
+    db?: string;
+    user?: string;
+    password?: string;
+    mongoUri?: string;
+    migrationCollection: string;
+    replicaSet?: string;
+}
+
+export interface MigrationResponse {
+    id: string;
+    status: 'not-run' | 'skipped' | 'pending' | 'ok' | 'error' | 'rollback' | 'rollback-error';
+}
+
+export class Migration {
+    constructor(dbConfig: DbConfig);
+    add: (paths: string | string[]) => void;
+    addAllFromPath: (path: string) => void;
+    migrate: (doneCb?: (err: Error | null, response: MigrationResponse[]) => void) => void;
+}
+
+export interface MigrationStep {
+    id: string;
+    up: (db: Db, cb: (err?: Error) => void) => void;
+    down?: (db: Db, cb: (err?: Error) => void) => void;
+}

types/mongration/mongration-tests.ts

@@ -0,0 +1,28 @@
+import { Migration, DbConfig, MigrationStep } from 'mongration';
+
+const dbConfig: DbConfig = {
+  hosts: 'localhost:27017',
+  db: 'testdb',
+  migrationCollection: 'migrationversions'
+};
+
+const migration = new Migration(dbConfig);
+migration.add('1-add-foo.js');
+migration.add(['2-add-bar.js', '3-add-foobar.js']);
+migration.addAllFromPath('migrations');
+migration.migrate((err, response) => {
+  if (!err) {
+    return response;
+  }
+});
+
+// from https://github.com/awapps/mongration#creating-migration-steps
+const step: MigrationStep = {
+  id: '1-step',
+  up: (db, cb) => {
+    db.collection('testcolleciton').insert({ name: 'initial-setup' }, cb);
+  },
+  down: (db, cb) => {
+    db.collection('testcollection').remove({ name: 'initial-setup' }, cb);
+  }
+};

types/mongration/tsconfig.json

@@ -0,0 +1,23 @@
+{
+    "compilerOptions": {
+        "module": "commonjs",
+        "lib": [
+            "es6"
+        ],
+        "noImplicitAny": true,
+        "noImplicitThis": true,
+        "strictNullChecks": true,
+	"strictFunctionTypes": true,
+        "baseUrl": "../",
+        "typeRoots": [
+            "../"
+        ],
+        "types": [],
+        "noEmit": true,
+        "forceConsistentCasingInFileNames": true
+    },
+    "files": [
+        "index.d.ts",
+        "mongration-tests.ts"
+    ]
+}

types/mongration/tslint.json

@@ -0,0 +1 @@
+{ "extends": "dtslint/dt.json" }