Merge pull request #28571 from danwbyrne/mali-compose

adds typings for the 'mali-compose' package

types/mali-compose/index.d.ts

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+// Type definitions for mali 1.1
+// Project: https://github.com/malijs/mali-compose
+// Definitions by: Daniel Byrne <https://github.com/danwbyrne>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+// TypeScript Version: 2.1
+
+import { Context } from "mali";
+
+declare function compose(
+    middleware: ReadonlyArray<
+        (ctx: Context, next: () => Promise<void>) => Promise<void>
+    >
+): (context: Context, next: () => Promise<void>) => Promise<void>;
+
+export = compose;

types/mali-compose/mali-compose-tests.ts

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+import compose = require('mali-compose');
+import { Context } from 'mali';
+
+type middleware = (context: Context, next: () => Promise<void>) => Promise<void>;
+
+const arr: number[] = [];
+const stack: middleware[] = [];
+
+function _sleep(ms: number) {
+  return new Promise((resolve) => setTimeout(resolve, ms));
+}
+
+stack.push(async (ctx: Context, next: () => Promise<void>) => {
+    arr.push(1);
+    await _sleep(1);
+    await next();
+    await _sleep(1);
+    arr.push(6);
+  });
+
+stack.push(async (ctx: Context, next: () => Promise<void>) => {
+  arr.push(2);
+  await _sleep(1);
+  await next();
+  await _sleep(1);
+  arr.push(5);
+});
+
+stack.push(async (ctx: Context, next: () => Promise<void>) => {
+  arr.push(3);
+  await _sleep(1);
+  await next();
+  await _sleep(1);
+  arr.push(4);
+});
+
+compose(stack);
+compose([]);
+compose([compose(stack)]);

types/mali-compose/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",
+		"mali-compose-tests.ts"
+	]
+}

types/mali-compose/tslint.json

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+{
+  "extends": "dtslint/dt.json"
+}