add ajv-pack typings (#38425)

* add ajv-pack typings

* ajv-pack restructure typings to leverage namespace

* ajv-pack: add newline to tsconfig

* ajv-pack: simplify namespace

types/ajv-pack/ajv-pack-tests.ts

@@ -0,0 +1,18 @@
+import * as Ajv from 'ajv';
+import * as pack from 'ajv-pack';
+
+const ajv = new Ajv({ sourceCode: true });
+
+const schema = {
+  type: 'object',
+  properties: {
+    foo: {
+      type: 'string',
+      pattern: '^[a-z]+$',
+    },
+  },
+};
+
+const validate = ajv.compile(schema);
+pack(ajv, validate); // $ExpectType string
+pack.instance(ajv); // $ExpectType AjvPack

types/ajv-pack/index.d.ts

@@ -0,0 +1,45 @@
+// Type definitions for ajv-pack 0.3
+// Project: https://github.com/epoberezkin/ajv-pack
+// Definitions by: Mihail Malo <https://github.com/qm3ster>
+//                 Christian Murphy <https://github.com/ChristianMurphy>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+// TypeScript Version: 2.2
+
+import { Ajv, ValidateFunction } from 'ajv';
+
+declare namespace AjvPack {
+    interface AjvPack {
+        /**
+         * validate data against the schema
+         * @param schema JSON-schema
+         * @param data data to validate
+         * @return validation result
+         */
+        validate(this: Ajv, schema: object, data: any): boolean;
+
+        /**
+         * compile the schema and require the module
+         * @param  schema JSON-schema
+         * @return validation function
+         */
+        compile(this: Ajv, schema: object): ValidateFunction;
+
+        /**
+         * add schema to the instance
+         * @return result from ajv instance
+         */
+        addSchema: Ajv['addSchema'];
+
+        /**
+         * add custom keyword to the instance
+         * @return result from ajv instance
+         */
+        addKeyword: Ajv['addKeyword'];
+    }
+
+    function instance(ajv: Ajv): AjvPack;
+}
+
+declare function AjvPack(ajv: Ajv, validate: ValidateFunction): string;
+
+export = AjvPack;

types/ajv-pack/package.json

@@ -0,0 +1,6 @@
+{
+    "private": true,
+    "dependencies": {
+        "ajv": "^5.0.0"
+    }
+}

types/ajv-pack/tsconfig.json

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

types/ajv-pack/tslint.json

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