refactor($markdown): use relativePath instead of relPath (#1485)

packages/@vuepress/core/lib/node/Page.js

@@ -124,7 +124,7 @@ module.exports = class Page {
         if (excerpt) {
           const { html } = markdown.render(excerpt, {
             frontmatter: this.frontmatter,
-            relPath: this.relativePath
+            relativePath: this.relativePath
           })
           this.excerpt = html
         }

packages/@vuepress/markdown-loader/index.js

@@ -65,7 +65,7 @@ module.exports = function (src) {
   } = markdown.render(content, {
     loader,
     frontmatter: data,
-    relPath: path.relative(sourceDir, file).replace(/\\/g, '/')
+    relativePath: path.relative(sourceDir, file).replace(/\\/g, '/')
   })
 
   // check if relative links are valid

packages/@vuepress/markdown/index.js

@@ -123,7 +123,7 @@ module.exports = (markdown = {}) => {
   const parse = md.parse
   const cache = new LRUCache({ max: 1000 })
   md.parse = (src, env) => {
-    const key = hash(src + env.relPath)
+    const key = hash(src + env.relativePath)
     const cached = cache.get(key)
     if (cached) {
       return cached

packages/@vuepress/markdown/lib/link.js

@@ -11,7 +11,7 @@ module.exports = (md, externalAttrs) => {
   let hasOpenExternalLink = false
 
   md.renderer.rules.link_open = (tokens, idx, options, env, self) => {
-    const { relPath } = env
+    const { relativePath } = env
     const token = tokens[idx]
     const hrefIndex = token.attrIndex('href')
     if (hrefIndex >= 0) {
@@ -28,13 +28,13 @@ module.exports = (md, externalAttrs) => {
         }
       } else if (isSourceLink) {
         hasOpenRouterLink = true
-        tokens[idx] = toRouterLink(token, link, relPath)
+        tokens[idx] = toRouterLink(token, link, relativePath)
       }
     }
     return self.renderToken(tokens, idx, options)
   }
 
-  function toRouterLink (token, link, relPath) {
+  function toRouterLink (token, link, relativePath) {
     link[0] = 'to'
     let to = link[1]
 
@@ -44,8 +44,8 @@ module.exports = (md, externalAttrs) => {
 
     // relative path usage.
     if (!to.startsWith('/')) {
-      to = relPath
-        ? url.resolve('/' + relPath, to)
+      to = relativePath
+        ? url.resolve('/' + relativePath, to)
         : ensureBeginningDotSlash(to)
     }