fix(config): use json5 parser for json5 build configs

Use json5 parser to parse json5 build configs (i. e. files ending on
"json5").
Json5 can have javascript-style comments whereas yaml does not. Thus we
cannot use the yaml parser for json5.

Close #1569, #1578

.travis.yml

@@ -16,9 +16,8 @@ language: c
 cache:
   directories:
     - node_modules
-    - packages/electron-builder/node_modules
-    - packages/electron-builder-util/node_modules
     - $HOME/Library/Caches/electron
+    - $HOME/Library/Caches/electron-builder
     - /tmp/jest-electron-builder-tests
 
 before_install:

appveyor.yml

@@ -4,6 +4,7 @@ platform:
 cache:
   - node_modules
   - '%LOCALAPPDATA%\electron\Cache'
+  - '%LOCALAPPDATA%\electron-builder\cache'
 
 environment:
   TEST_FILES: ExtraBuildTest,BuildTest,extraMetadataTest,filesTest,globTest,nsisUpdaterTest,oneClickInstallerTest,installerTest

package.json

@@ -46,6 +46,7 @@
     "is-ci": "^1.0.10",
     "isbinaryfile": "^3.0.2",
     "js-yaml": "^3.8.4",
+    "json5": "^0.5.1",
     "mime": "^1.3.6",
     "minimatch": "^3.0.4",
     "node-emoji": "^1.5.1",

packages/electron-builder/package.json

@@ -62,6 +62,7 @@
     "is-ci": "^1.0.10",
     "isbinaryfile": "^3.0.2",
     "js-yaml": "^3.8.4",
+    "json5": "^0.5.1",
     "minimatch": "^3.0.4",
     "node-forge": "^0.7.1",
     "normalize-package-data": "^2.3.8",

packages/electron-builder/src/util/readPackageJson.ts

@@ -3,6 +3,7 @@ import { debug } from "electron-builder-util"
 import { log, warn } from "electron-builder-util/out/log"
 import { readFile, readJson } from "fs-extra-p"
 import { safeLoad } from "js-yaml"
+import JSON5 from "json5"
 import * as path from "path"
 import { readAsarJson } from "../asar"
 import { Config } from "../metadata"
@@ -45,7 +46,8 @@ function getConfigFromPackageData(metadata: any) {
 }
 
 export async function doLoadConfig(configFile: string, projectDir: string) {
-  const result = safeLoad(await readFile(configFile, "utf8"))
+  const data = await readFile(configFile, "utf8")
+  const result = configFile.endsWith(".json5") ? JSON5.parse(data) : safeLoad(data)
   const relativePath = path.relative(projectDir, configFile)
   log(`Using ${relativePath.startsWith("..") ? configFile : relativePath} configuration file`)
   return result

typings/json5.d.ts

@@ -0,0 +1,4 @@
+declare module "json5" {
+  const json5: JSON
+  export default json5
+}

yarn.lock

@@ -2081,7 +2081,7 @@ json-stringify-safe@~5.0.1:
   version "5.0.1"
   resolved "https://registry.yarnpkg.com/json-stringify-safe/-/json-stringify-safe-5.0.1.tgz#1296a2d58fd45f19a0f6ce01d65701e2c735b6eb"
 
-json5@^0.5.0:
+json5@^0.5.0, json5@^0.5.1:
   version "0.5.1"
   resolved "https://registry.yarnpkg.com/json5/-/json5-0.5.1.tgz#1eade7acc012034ad84e2396767ead9fa5495821"
 
@@ -2314,18 +2314,14 @@ minimatch@^3.0.2, minimatch@^3.0.3, minimatch@^3.0.4:
   dependencies:
     brace-expansion "^1.1.7"
 
-[email protected]:
+[email protected], minimist@~0.0.1:
   version "0.0.8"
   resolved "https://registry.yarnpkg.com/minimist/-/minimist-0.0.8.tgz#857fcabfc3397d2625b8228262e86aa7a011b05d"
 
 minimist@^1.1.0, minimist@^1.1.1, minimist@^1.1.3, minimist@^1.2.0:
   version "1.2.0"
   resolved "https://registry.yarnpkg.com/minimist/-/minimist-1.2.0.tgz#a35008b20f41383eec1fb914f4cd5df79a264284"
 
-minimist@~0.0.1:
-  version "0.0.10"
-  resolved "https://registry.yarnpkg.com/minimist/-/minimist-0.0.10.tgz#de3f98543dbf96082be48ad1a0c7cda836301dcf"
-
 mkdirp2@^1.0.2:
   version "1.0.3"
   resolved "https://registry.yarnpkg.com/mkdirp2/-/mkdirp2-1.0.3.tgz#cc8dd8265f1f06e2d8f5b10b6e52f4e050bed21b"