feat(generic): allow JS files to provide the config object

ISSUES CLOSED: #21

src/util/forge-config.js

@@ -3,6 +3,16 @@ import path from 'path';
 
 export default async (dir) => {
   let forgeConfig = JSON.parse(await fs.readFile(path.resolve(dir, 'package.json'))).config.forge;
+  if (typeof forgeConfig === 'string' && (await fs.exists(path.resolve(dir, forgeConfig)) || await fs.exists(path.resolve(dir, `${forgeConfig}.js`)))) {
+    try {
+      forgeConfig = require(path.resolve(dir, forgeConfig));
+    } catch (err) {
+      console.error(`Failed to load: ${path.resolve(dir, forgeConfig)}`);
+      throw err;
+    }
+  } else if (typeof forgeConfig !== 'object') {
+    throw new Error('Expected packageJSON.config.forge to be an object or point to a requirable JS file');
+  }
   forgeConfig = Object.assign({
     make_targets: {},
     electronPackagerConfig: {},

test/fixture/dummy_app/package.json

@@ -18,9 +18,9 @@
         "linux": ["deb", "rpm"]
       },
       "electronPackagerConfig": {},
-      "electronWinstallerConfig": {},
+      "electronInstallerRedhat": {},
       "electronInstallerDebian": {},
-      "electronInstallerRedhat": {}
+      "electronWinstallerConfig": { "windows": "magic" }
     }
   },
   "devDependencies": {

test/fixture/dummy_js_conf/forge.config.js

@@ -0,0 +1,13 @@
+module.exports = {
+  make_targets: {
+    win32: ['squirrel'],
+    darwin: ['zip'],
+    linux: ['deb', 'rpm'],
+    mas: ['zip'],
+  },
+  electronPackagerConfig: { foo: 'bar' },
+  electronWinstallerConfig: {},
+  electronInstallerDebian: {},
+  electronInstallerRedhat: {},
+  magicFn: () => 'magic result',
+};

test/fixture/dummy_js_conf/package.json

@@ -0,0 +1,19 @@
+{
+  "name": "",
+  "productName": "",
+  "version": "1.0.0",
+  "description": "",
+  "main": "src/index.js",
+  "scripts": {
+    "start": "electron-forge start"
+  },
+  "keywords": [],
+  "author": "",
+  "license": "MIT",
+  "config": {
+    "forge": "./forge.config.js"
+  },
+  "devDependencies": {
+    "electron-prebuilt-compile": "9.9.9"
+  }
+}

test/util_spec.js

@@ -2,6 +2,7 @@ import { expect } from 'chai';
 import path from 'path';
 
 import resolveDir from '../src/util/resolve-dir';
+import findConfig from '../src/util/forge-config';
 
 describe('resolve-dir', () => {
   it('should return null if a valid dir can not be found', async () => {
@@ -9,7 +10,41 @@ describe('resolve-dir', () => {
   });
 
   it('should return a directory if it finds a node module', async () => {
-    expect(await resolveDir(path.resolve(__dirname, 'fixture/foo'))).to.not.be.equal(null);
-    expect(await resolveDir(path.resolve(__dirname, 'fixture/foo'))).to.be.equal(path.resolve(__dirname, 'fixture'));
+    expect(await resolveDir(path.resolve(__dirname, 'fixture/dummy_app/foo'))).to.not.be.equal(null);
+    expect(await resolveDir(path.resolve(__dirname, 'fixture/dummy_app/foo'))).to.be.equal(path.resolve(__dirname, 'fixture/dummy_app'));
+  });
+});
+
+const defaults = {
+  make_targets: {
+    win32: ['squirrel'],
+    darwin: ['zip'],
+    linux: ['deb', 'rpm'],
+    mas: ['zip'],
+  },
+  electronInstallerDMG: {},
+  electronPackagerConfig: {},
+  electronWinstallerConfig: {},
+  electronInstallerDebian: {},
+  electronInstallerRedhat: {},
+};
+
+describe('forge-config', () => {
+  it('should resolve the object in package.json with defaults  if one exists', async () => {
+    expect(await findConfig(path.resolve(__dirname, 'fixture/dummy_app'))).to.be.deep.equal(Object.assign({}, defaults, {
+      electronWinstallerConfig: { windows: 'magic' },
+    }));
+  });
+
+  it('should resolve the JS file exports in config.forge points to a JS file', async () => {
+    expect(JSON.parse(JSON.stringify(await findConfig(path.resolve(__dirname, 'fixture/dummy_js_conf'))))).to.be.deep.equal(Object.assign({}, defaults, {
+      electronPackagerConfig: { foo: 'bar' },
+    }));
+  });
+
+  it('should resolve the JS file exports in config.forge points to a JS file and maintain functions', async () => {
+    const conf = await findConfig(path.resolve(__dirname, 'fixture/dummy_js_conf'));
+    expect(conf.magicFn).to.be.a('function');
+    expect(conf.magicFn()).to.be.equal('magic result');
   });
 });