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node_modules/vue-router/src/util/location.js

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+/* @flow */
+
+import type VueRouter from '../index'
+import { parsePath, resolvePath } from './path'
+import { resolveQuery } from './query'
+import { fillParams } from './params'
+import { warn } from './warn'
+import { extend } from './misc'
+
+export function normalizeLocation (
+  raw: RawLocation,
+  current: ?Route,
+  append: ?boolean,
+  router: ?VueRouter
+): Location {
+  let next: Location = typeof raw === 'string' ? { path: raw } : raw
+  // named target
+  if (next._normalized) {
+    return next
+  } else if (next.name) {
+    next = extend({}, raw)
+    const params = next.params
+    if (params && typeof params === 'object') {
+      next.params = extend({}, params)
+    }
+    return next
+  }
+
+  // relative params
+  if (!next.path && next.params && current) {
+    next = extend({}, next)
+    next._normalized = true
+    const params: any = extend(extend({}, current.params), next.params)
+    if (current.name) {
+      next.name = current.name
+      next.params = params
+    } else if (current.matched.length) {
+      const rawPath = current.matched[current.matched.length - 1].path
+      next.path = fillParams(rawPath, params, `path ${current.path}`)
+    } else if (process.env.NODE_ENV !== 'production') {
+      warn(false, `relative params navigation requires a current route.`)
+    }
+    return next
+  }
+
+  const parsedPath = parsePath(next.path || '')
+  const basePath = (current && current.path) || '/'
+  const path = parsedPath.path
+    ? resolvePath(parsedPath.path, basePath, append || next.append)
+    : basePath
+
+  const query = resolveQuery(
+    parsedPath.query,
+    next.query,
+    router && router.options.parseQuery
+  )
+
+  let hash = next.hash || parsedPath.hash
+  if (hash && hash.charAt(0) !== '#') {
+    hash = `#${hash}`
+  }
+
+  return {
+    _normalized: true,
+    path,
+    query,
+    hash
+  }
+}