feat: support toml config (#138)

* feat: support toml config

* remove config.toml

* fix: proper iteration over meta tags

lib/prepare.js

@@ -2,6 +2,7 @@ const path = require('path')
 const fs = require('fs-extra')
 const globby = require('globby')
 const yamlParser = require('js-yaml')
+const tomlParser = require('toml')
 const yaml = require('yaml-front-matter')
 const createMarkdown = require('./markdown')
 const tempPath = path.resolve(__dirname, 'app/.temp')
@@ -69,12 +70,14 @@ async function resolveOptions (sourceDir) {
   const vuepressDir = path.resolve(sourceDir, '.vuepress')
   const configPath = path.resolve(vuepressDir, 'config.js')
   const configYmlPath = path.resolve(vuepressDir, 'config.yml')
+  const configTomlPath = path.resolve(vuepressDir, 'config.toml')
 
   delete require.cache[configPath]
   let siteConfig = {}
   if (fs.existsSync(configYmlPath)) {
-    const content = await fs.readFile(configYmlPath, 'utf-8')
-    siteConfig = yamlParser.safeLoad(content)
+    siteConfig = await parseConfig(configYmlPath)
+  } else if (fs.existsSync(configTomlPath)) {
+    siteConfig = await parseConfig(configTomlPath)
   } else if (fs.existsSync(configPath)) {
     siteConfig = require(configPath)
   }
@@ -283,3 +286,31 @@ function sort (arr) {
     return 0
   })
 }
+
+async function parseConfig (file) {
+  const content = await fs.readFile(file, 'utf-8')
+  const [extension] = /.\w+$/.exec(file)
+  let data
+
+  switch (extension) {
+  case '.yml':
+  case '.yaml':
+    data = yamlParser.safeLoad(content)
+    break
+
+  case '.toml':
+    data = tomlParser.parse(content)
+    // reformat to match config since TOML does not allow different data type
+    // https://github.com/toml-lang/toml#array
+    const format = []
+    Object.keys(data.head).forEach(meta => {
+      data.head[meta].forEach(values => {
+        format.push([meta, values])
+      })
+    })
+    data.head = format
+    break
+  }
+
+  return data || {}
+}

package.json

@@ -78,6 +78,7 @@
     "semver": "^5.5.0",
     "stylus": "^0.54.5",
     "stylus-loader": "^3.0.2",
+    "toml": "^2.3.3",
     "url-loader": "^1.0.1",
     "vue": "^2.5.16",
     "vue-loader": "^15.0.0-rc.1",

yarn.lock

@@ -6035,6 +6035,10 @@ to-regex@^3.0.1, to-regex@^3.0.2:
     regex-not "^1.0.2"
     safe-regex "^1.1.0"
 
+toml@^2.3.3:
+  version "2.3.3"
+  resolved "https://registry.yarnpkg.com/toml/-/toml-2.3.3.tgz#8d683d729577cb286231dfc7a8affe58d31728fb"
+
 topo@2.x.x:
   version "2.0.2"
   resolved "https://registry.yarnpkg.com/topo/-/topo-2.0.2.tgz#cd5615752539057c0dc0491a621c3bc6fbe1d182"