Add types for interpret

types/interpret/index.d.ts

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+// Type definitions for interpret 1.1
+// Project: https://github.com/tkellen/node-interpret
+// Definitions by: BendingBender <https://github.com/BendingBender>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+
+/// <reference types="node" />
+
+export interface Hook {
+    (m: { extensions: string } | NodeModule): any;
+    install(m?: { extension: string; [key: string]: any }): void;
+}
+
+export type RegisterFn = (hook: Hook) => void;
+
+export interface ExtensionDescriptor {
+    module: string;
+    register: RegisterFn;
+}
+
+export type Extension = string | ExtensionDescriptor | Array<string | ExtensionDescriptor>;
+export interface Extensions {
+    [extension: string]: Extension | null;
+}
+
+export const extensions: Extensions;
+export const jsVariants: Extensions;

types/interpret/interpret-tests.ts

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+import { extensions, jsVariants, Extensions } from 'interpret';
+
+// $ExpectType Extensions
+extensions;
+// $ExpectType Extensions
+jsVariants;
+
+const myExts: Extensions = {
+    '.babel.js': [
+        {
+            module: 'babel-register',
+            register(hook) {
+                hook({ extensions: '.js' });
+            },
+        },
+    ],
+    '.co': 'coco',
+    '.coffee': ['coffeescript/register', 'coffee-script/register', 'coffeescript', 'coffee-script'],
+    '.esm.js': {
+        module: 'esm',
+        register(hook) {
+            const esmLoader = hook(module);
+            require.extensions['.js'] = esmLoader('module')._extensions['.js'];
+        },
+    },
+    '.js': null,
+    '.jsx': [
+        {
+            module: 'node-jsx',
+            register(hook) {
+                hook.install({ extension: '.jsx', harmony: true });
+            },
+        },
+    ],
+    '.toml': {
+        module: 'toml-require',
+        register(hook) {
+            hook.install();
+        },
+    },
+    '.ts': [
+        'typescript-require',
+        {
+            module: '@babel/register',
+            register(hook) {
+                hook({ extensions: '.ts' });
+            },
+        },
+    ],
+};

types/interpret/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",
+        "interpret-tests.ts"
+    ]
+}

types/interpret/tslint.json

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