[final-form-focus] Add Typescript definitions. (#38200)

types/final-form-focus/final-form-focus-tests.tsx

@@ -0,0 +1,12 @@
+import { Decorator, getIn } from 'final-form';
+import createDecorator, { FindInput, FocusableInput, getFormInputs, GetInputs } from 'final-form-focus';
+
+createDecorator(); // $ExpectType Decorator<object>
+
+const inputs = getFormInputs('formName'); // $ExpectType GetInputs
+createDecorator(inputs); // $ExpectType Decorator<object>
+
+const findInput: FindInput = (inputs: FocusableInput[], errors: object) =>
+    inputs.find(input => input.name && getIn(errors, input.name));
+
+createDecorator(inputs, findInput); // $ExpectType Decorator<object>

types/final-form-focus/index.d.ts

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+// Type definitions for final-form-focus 1.1
+// Project: https://github.com/final-form/final-form-focus
+// Definitions by: Jeow Li Huan <https://github.com/huan086>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+// TypeScript Version: 2.8
+
+import { Decorator } from 'final-form';
+
+export interface FocusableInput {
+  name: string;
+  focus: () => void;
+}
+
+export type GetInputs = () => FocusableInput[];
+
+export type FindInput = (inputs: FocusableInput[], errors: object) => FocusableInput | undefined;
+
+export default function createDecorator(
+  getInputs?: GetInputs,
+  findInput?: FindInput,
+): Decorator;
+
+export function getFormInputs(formName: string): GetInputs;

types/final-form-focus/package.json

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+{
+    "private": true,
+    "dependencies": {
+        "final-form": "4.x.x"
+    }
+}

types/final-form-focus/tsconfig.json

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+{
+    "compilerOptions": {
+        "module": "commonjs",
+        "lib": [
+            "es6",
+            "dom"
+        ],
+        "noImplicitAny": true,
+        "noImplicitThis": true,
+        "strictNullChecks": true,
+        "strictFunctionTypes": true,
+        "baseUrl": "../",
+        "jsx": "react",
+        "typeRoots": [
+            "../"
+        ],
+        "types": [],
+        "noEmit": true,
+        "forceConsistentCasingInFileNames": true
+    },
+    "files": [
+        "index.d.ts",
+        "final-form-focus-tests.tsx"
+    ]
+}

types/final-form-focus/tslint.json

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