Add types for graphql-depth-limit (#25568)

* add types for graphql-depth-limit

* improve type declaration

* remove "strict-export-declare-modifiers" rule disable

types/graphql-depth-limit/graphql-depth-limit-tests.ts

@@ -0,0 +1,29 @@
+import graphqlDepthLimit = require('graphql-depth-limit');
+import {
+    GraphQLSchema,
+    DocumentNode,
+    buildSchema,
+    Source,
+    parse,
+    validate,
+    specifiedRules
+} from 'graphql';
+
+const schema: GraphQLSchema = buildSchema(`
+  # graphql schema goes here...
+`);
+const document: DocumentNode = parse(new Source(`
+  # graphql query goes here...
+`, 'GraphQL request'));
+
+validate(schema, document, [ graphqlDepthLimit(5) ]);
+
+validate(schema, document, [ ...specifiedRules, graphqlDepthLimit(10) ]);
+
+validate(schema, document, [ graphqlDepthLimit(
+    10,
+    { ignore: [ /_trusted$/, 'idontcare' ] },
+    (depths: any) => {
+        // do something....
+    },
+)]);

types/graphql-depth-limit/index.d.ts

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+// Type definitions for graphql-depth-limit 1.1
+// Project: https://github.com/stems/graphql-depth-limit#readme
+// Definitions by: Siim Tiilen <https://github.com/eritikass>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+// TypeScript Version: 2.8
+
+declare function depthLimit(depthLimit: number, options?: depthLimit.Options, callback?: (obj: any) => void): any;
+export = depthLimit;
+
+declare namespace depthLimit {
+    interface Options {
+        ignore: Array<string | RegExp | ((queryDepths: any[]) => boolean)>;
+    }
+}

types/graphql-depth-limit/tsconfig.json

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+{
+    "compilerOptions": {
+        "module": "commonjs",
+        "lib": [
+            "es6"
+        ],
+        "noImplicitAny": true,
+        "noImplicitThis": true,
+        "strictNullChecks": true,
+        "strictFunctionTypes": true,
+        "baseUrl": "../",
+        "typeRoots": [
+            "../"
+        ],
+        "types": [],
+        "noEmit": true,
+        "forceConsistentCasingInFileNames": true
+    },
+    "files": [
+        "index.d.ts",
+        "graphql-depth-limit-tests.ts"
+    ]
+}

types/graphql-depth-limit/tslint.json

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