Leap year maintenance

* Require Node.js 10

* Test Node.js 10, 12 and 13 using GitHub Actions

* Update dependencies

* Configure nyc

* Disable lock files

* Modernize implementation

Match documentation and only fall through to underlying implementation
when null is returned.

Author: novemberborn

.github/workflows/ci.yml

@@ -0,0 +1,25 @@
+name: Install and test
+on:
+  push:
+    branches:
+    - master
+  pull_request:
+    paths-ignore:
+    - '*.md'
+jobs:
+  nodejs:
+    name: Node.js
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        node-version: [^10, ^12, ^13]
+    steps:
+      - uses: actions/checkout@v1
+        with:
+          fetch-depth: 1
+      - uses: actions/setup-node@v1
+        with:
+          node-version: ${{ matrix.node-version }}
+      - run: npm install --no-audit
+      - run: npm test

.npmrc

@@ -0,0 +1 @@
+package-lock=false

.travis.yml

@@ -1,20 +1,15 @@
 'use strict';
 module.exports = install;
 
-function install(precompile, ext, extensions) {
-	ext = ext || '.js';
-	extensions = extensions || require.extensions;
-
-	var oldExtension = extensions[ext];
+function install(precompile, ext = '.js', extensions = require.extensions) { // eslint-disable-line node/no-deprecated-api
+	const {[ext]: oldExtension} = extensions;
 
 	extensions[ext] = function (module, filename) {
-		var source = precompile(filename);
-
-		if (source) {
+		const source = precompile(filename);
+		if (source === null) {
+			Reflect.apply(oldExtension, extensions, [module, filename]);
+		} else {
 			module._compile(source, filename);
-			return;
 		}
-
-		oldExtension(module, filename);
 	};
 }

index.js

@@ -10,10 +10,10 @@
     "url": "github.com/jamestalmage"
   },
   "engines": {
-    "node": ">=0.10.0"
+    "node": ">=10"
   },
   "scripts": {
-    "test": "xo && nyc --reporter=lcov --reporter=text ava"
+    "test": "xo && nyc ava"
   },
   "files": [
     "index.js"
@@ -25,10 +25,16 @@
     "precompile"
   ],
   "devDependencies": {
-    "ava": "^0.14.0",
-    "coveralls": "^2.11.6",
+    "ava": "^3.2.0",
     "fake-module-system": "^0.3.0",
-    "nyc": "^6.2.1",
-    "xo": "^0.15.1"
+    "nyc": "^15.0.0",
+    "xo": "^0.25.3"
+  },
+  "nyc": {
+    "reporter": [
+      "html",
+      "lcov",
+      "text"
+    ]
   }
 }

package.json

@@ -1,4 +1,4 @@
-# require-precompiled [![Build Status](https://travis-ci.org/avajs/require-precompiled.svg?branch=master)](https://travis-ci.org/avajs/require-precompiled) [![Coverage Status](https://coveralls.io/repos/github/avajs/require-precompiled/badge.svg?branch=master)](https://coveralls.io/github/avajs/require-precompiled?branch=master)
+# require-precompiled
 
 > Require extension that allows for caching/precompiling
 

readme.md

@@ -1,7 +1,7 @@
-import path from 'path';
-import test from 'ava';
-import System from 'fake-module-system';
-import install from './';
+const path = require('path');
+const test = require('ava');
+const System = require('fake-module-system');
+const install = require('.');
 
 test('module is compiled with source returned from precompiler', t => {
 	const system = new System({
@@ -19,14 +19,14 @@ test('module is compiled with source returned from precompiler', t => {
 	t.is(module.file, '/foo.js');
 });
 
-test('passes through to underlying extension precompiler returns undefined', t => {
+test('passes through to underlying extension precompiler returns null', t => {
 	const system = new System({
 		'/foo.js': 'normal foo'
 	});
 
 	install(filename => {
 		t.is(filename, '/foo.js');
-		return;
+		return null;
 	}, '.js', system.extensions);
 
 	const module = system.load('/foo.js');