fix(index): cannot work at Vue 1.0.10 later

issues closes #9

src/compare.js

@@ -0,0 +1,48 @@
+/**
+ * Version compare
+ * - Inspired:
+ *   https://github.com/omichelsen/compare-versions
+ */
+
+const PATCH_PATTERN = /-([\w-.]+)/
+
+
+function split (v) {
+  let temp = v.split('.')
+  let arr = temp.splice(0, 2)
+  arr.push(temp.join('.'))
+  return arr
+}
+
+/**
+ * compare
+ *
+ * @param {String} v1
+ * @param {String} v2
+ * @return {Number}
+ */
+
+export default function (v1, v2) {
+  let s1 = split(v1)
+  let s2 = split(v2)
+
+  for (let i = 0; i < 3; i++) {
+    let n1 = parseInt(s1[i] || 0, 10)
+    let n2 = parseInt(s2[i] || 0, 10)
+
+    if (n1 > n2) { return 1 }
+    if (n2 > n1) { return -1 }
+  }
+
+  if ((s1[2] + s2[2] + '').indexOf('-') > -1) {
+    let p1 = (PATCH_PATTERN.exec(s1[2]) || [''])[0]
+    let p2 = (PATCH_PATTERN.exec(s2[2]) || [''])[0]
+
+    if (p1 === '') { return 1 }
+    if (p2 === '') { return -1 }
+    if (p1 > p2) { return 1 }
+    if (p2 > p1) { return -1 }
+  }
+
+  return 0
+}

src/extend.js

@@ -1,4 +1,5 @@
 import format from './format'
+import compare from './compare'
 
 
 /**
@@ -10,13 +11,15 @@ import format from './format'
  */
 
 export default function (Vue, locales) {
-  const path = Vue.parsers.path
+  const getPath = (Vue.version && compare('1.0.8', Vue.version) === -1) 
+      ? Vue.parsers.path.getPath
+      : Vue.parsers.path.get
   const util = Vue.util
 
-  function getVal (path, key, lang, args) {
+  function getVal (key, lang, args) {
     let value = key
     try {
-      let val = path.get(locales[lang], key) || locales[lang][key]
+      let val = getPath(locales[lang], key) || locales[lang][key]
       value = (args ? format(val, args) : val) || key
     } catch (e) {
       value = key
@@ -51,7 +54,7 @@ export default function (Vue, locales) {
       }
     }
 
-    return getVal(path, key, language, args)
+    return getVal(key, language, args)
   }
 
   return Vue

test/specs/compare.js

@@ -0,0 +1,55 @@
+import assert from 'power-assert'
+import compare from '../../src/compare'
+
+
+describe('compare', () => {
+  it('should compare three-segment versions correctly', () => {
+    assert.equal(compare('10.1.8', '10.0.4'), 1)
+    assert.equal(compare('10.0.1', '10.0.1'), 0)
+    assert.equal(compare('10.1.1', '10.2.2'), -1)
+  })
+
+  it('should compare two-segment versions correctly', () => {
+    assert.equal(compare('10.8', '10.4'), 1)
+    assert.equal(compare('10.1', '10.1'), 0)
+    assert.equal(compare('10.1', '10.2'), -1)
+  })
+
+  it('should compare single-segment versions correctly', () => {
+    assert.equal(compare('10', '9'), 1)
+    assert.equal(compare('10', '10'), 0)
+    assert.equal(compare('9', '10'), -1)
+  })
+
+  it('should compare versions with different number of digits in same group', () => {
+    assert.equal(compare('11.0.10', '11.0.2'), 1)
+    assert.equal(compare('11.0.2', '11.0.10'), -1)
+  })
+
+  it('should compare versions with different number of digits in different groups', () => {
+    assert.equal(compare('11.1.10', '11.0'), 1)
+  })
+
+  it('should compare versions with different number of digits', () => {
+    assert.equal(compare('1.1.1', '1'), 1)
+    assert.equal(compare('1.0.0', '1'), 0)
+    assert.equal(compare('1.0', '1.4.1'), -1)
+  })
+
+  it('should compare pre-release versions', () => {
+    assert.equal(compare('1.0.0-alpha.1', '1.0.0-alpha'), 1)
+    assert.equal(compare('1.0.0-alpha', '1.0.0-alpha'), 0)
+    assert.equal(compare('1.0.0-alpha', '1.0.0-alpha.beta'), -1)
+    assert.equal(compare('1.0.0-alpha', '1.0.0-beta'), -1)
+  })
+
+  it('should give precendece to normal versions over pre-release', () => {
+    assert.equal(compare('1.0.0', '1.0.0-alpha'), 1)
+    assert.equal(compare('1.0.0-beta', '1'), -1)
+  })
+
+  it('should ignore build metadata', () => {
+    assert.equal(compare('1.4.0-build.3928', '1.4.0-build.3928+sha.a8d9d4f'), 0)
+    assert.equal(compare('1.4.0-build.3928+sha.b8dbdb0', '1.4.0-build.3928+sha.a8d9d4f'), 0)
+  })
+})