From ea65f55484d4a86fc93038103e845f66ff468346 Mon Sep 17 00:00:00 2001
From: Peter Safranek <pe8ter@users.noreply.github.com>
Date: Sun, 18 Nov 2018 13:41:20 -0800
Subject: [PATCH] Add typings for just-pick (#30605)

---
 types/just-pick/index.d.ts         | 11 +++++++++++
 types/just-pick/just-pick-tests.ts | 26 ++++++++++++++++++++++++++
 types/just-pick/tsconfig.json      | 23 +++++++++++++++++++++++
 types/just-pick/tslint.json        |  6 ++++++
 4 files changed, 66 insertions(+)
 create mode 100644 types/just-pick/index.d.ts
 create mode 100644 types/just-pick/just-pick-tests.ts
 create mode 100644 types/just-pick/tsconfig.json
 create mode 100644 types/just-pick/tslint.json

diff --git a/types/just-pick/index.d.ts b/types/just-pick/index.d.ts
new file mode 100644
index 0000000000..04836648cc
--- /dev/null
+++ b/types/just-pick/index.d.ts
@@ -0,0 +1,11 @@
+// Type definitions for just-pick 2.1
+// Project: https://github.com/angus-c/just#readme
+// Definitions by: Peter Safranek <https://github.com/pe8ter>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+// TypeScript Version: 2.1
+
+declare function pick<T, U extends keyof T>(obj: T, select: U[]): Pick<T, U>;
+
+declare function pick<T, U extends keyof T>(obj: T, select1: U, ...selectn: U[]): Pick<T, U>;
+
+export = pick;
diff --git a/types/just-pick/just-pick-tests.ts b/types/just-pick/just-pick-tests.ts
new file mode 100644
index 0000000000..8f675a010c
--- /dev/null
+++ b/types/just-pick/just-pick-tests.ts
@@ -0,0 +1,26 @@
+import pick = require("just-pick");
+
+const a = "a";
+const b = "b";
+const c = "c";
+const obj = { a, b };
+
+pick(obj, []); // $ExpectType Pick<{ a: string; b: string; }, never>
+pick(obj, [a]); // $ExpectType Pick<{ a: string; b: string; }, "a">
+pick(obj, [a, a]); // $ExpectType Pick<{ a: string; b: string; }, "a">
+pick(obj, [a, b]); // $ExpectType Pick<{ a: string; b: string; }, "a" | "b">
+pick(obj, [a, b, c]); // $ExpectError
+
+pick(obj, a); // $ExpectType Pick<{ a: string; b: string; }, "a">
+pick(obj, a, a); // $ExpectType Pick<{ a: string; b: string; }, "a">
+pick(obj, a, b); // $ExpectType Pick<{ a: string; b: string; }, "a" | "b">
+pick(obj, a, b, c); // $ExpectError
+
+pick(); // $ExpectError
+pick(obj); // $ExpectError
+pick(obj, 0); // $ExpectError
+pick(obj, false); // $ExpectError
+pick(obj, null); // $ExpectError
+pick(obj, undefined); // $ExpectError
+pick(obj, {}); // $ExpectError
+pick(obj, () => {}); // $ExpectError
diff --git a/types/just-pick/tsconfig.json b/types/just-pick/tsconfig.json
new file mode 100644
index 0000000000..860c7fa95d
--- /dev/null
+++ b/types/just-pick/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",
+        "just-pick-tests.ts"
+    ]
+}
diff --git a/types/just-pick/tslint.json b/types/just-pick/tslint.json
new file mode 100644
index 0000000000..702f9354fc
--- /dev/null
+++ b/types/just-pick/tslint.json
@@ -0,0 +1,6 @@
+{
+    "extends": "dtslint/dt.json",
+    "rules": {
+        "file-name-casing": false
+    }
+}