Enforce "yarn install" usage and add yarn lockfile (#615)

.electron-vue/preinstall.js

@@ -0,0 +1,6 @@
+'use strict'
+
+if (!/yarn\.js$/.test(process.env.npm_execpath)) {
+  console.error('Please use yarn to install dependencies.\n')
+  process.exit(1)
+}

.electron-vue/webpack.renderer.config.js

@@ -147,7 +147,6 @@ const rendererConfig = {
         ? path.resolve(__dirname, '../node_modules')
         : false
     }),
-    new webpack.HotModuleReplacementPlugin(),
     new webpack.NoEmitOnErrorsPlugin(),
     new VueLoaderPlugin()
   ],
@@ -174,7 +173,8 @@ if (process.env.NODE_ENV !== 'production') {
   rendererConfig.plugins.push(
     new webpack.DefinePlugin({
       '__static': `"${path.join(__dirname, '../static').replace(/\\/g, '\\\\')}"`
-    })
+    }),
+    new webpack.HotModuleReplacementPlugin()
   )
 }
 

.github/CONTRIBUTING.md

@@ -73,18 +73,18 @@ If there are conflicts or you want to update your local branch, please do the fo
 Before you can get started developing, you need set up your build envoriment:
 
 - git
-- Node.js and npm
+- Node.js, npm and yarn
 - C++ compiler and development tools
 
 **Additional development dependencies on Linux:**
 
 On Debian-based Linux: `sudo apt-get install libx11-dev libxkbfile-dev`
-On Red Hat-based Linux: `sudo yum install libx11-devel libxkbfile-devel`
+On Red Hat-based Linux: `sudo dnf install libx11-devel libxkbfile-devel`
 
 **Let's build:**
 
 1. Go to `marktext` folder
-2. Install dependencies: `npm install`
+2. Install dependencies: `yarn install` or `yarn install --frozen-lockfile`
 3. Build Mark Text: `npm run build`
 4. Mark Text binary is located under `build` folder
 

.travis.yml

@@ -46,7 +46,7 @@ install:
   - npm --version
   - yarn --version
 
-  - yarn
+  - yarn install --frozen-lockfile
 
 script:
   - yarn run lint

appveyor.yml

@@ -28,7 +28,7 @@ install:
   - npm --version
   - yarn --version
 
-  - yarn
+  - yarn install --frozen-lockfile
 
 cache:
   - node_modules

package.json

@@ -24,6 +24,7 @@
     "pack:renderer": "cross-env NODE_ENV=production webpack --progress --colors --config .electron-vue/webpack.renderer.config.js",
     "test": "npm run unit && npm run e2e",
     "unit": "cross-env NODE_ENV=test karma start test/unit/karma.conf.js",
+    "preinstall": "node .electron-vue/preinstall.js",
     "postinstall": "npm run rebuild && npm run lint:fix",
     "build:muya": "cd src/muya && webpack --progress --colors --config webpack.config.js",
     "release:muya": "npm run build:muya && cd src/muya && npm publish",