feat: implements locale file name lower case (#95)

Author: Jiannan-dev

transformations/__tests__/locale-lang-file-lower-case.spec.ts

@@ -0,0 +1,19 @@
+import { defineInlineTest } from 'jscodeshift/src/testUtils'
+
+const transform = require('../element-plus/locale-lang-file-lower-case')
+
+defineInlineTest(
+  transform,
+  {},
+  `
+  import locale1 from 'element-plus/lib/locale/lang/zh-CN'
+  import locale2 from 'element-plus/lib/locale/lang/tr-TR'
+  import locale3 from 'element-plus/lib/locale/lang/en'
+`,
+  `
+  import locale1 from "element-plus/lib/locale/lang/zh-cn"
+  import locale2 from "element-plus/lib/locale/lang/tr-tr"
+  import locale3 from 'element-plus/lib/locale/lang/en'
+`,
+  'element-ui locale lang file lower case'
+)

transformations/element-plus-upgrade.ts

@@ -2,6 +2,7 @@ import wrap from '../src/wrapAstTransformation'
 import type { ASTTransformation } from '../src/wrapAstTransformation'
 import { transformAST as elementPlusImport } from './element-plus/element-plus-import'
 import { transformAST as elementPlusComponentName } from './element-plus/element-plus-component-name'
+import { transformAST as langLowerCase } from './element-plus/locale-lang-file-lower-case'
 import { getCntFunc } from '../src/report'
 
 export const transformAST: ASTTransformation = context => {
@@ -11,6 +12,7 @@ export const transformAST: ASTTransformation = context => {
   )
   elementPlusImport(context)
   elementPlusComponentName(context)
+  langLowerCase(context)
   const afterCount = Object.keys(subRules).reduce(
     (sum, key) => sum + subRules[key],
     0

transformations/element-plus/locale-lang-file-lower-case.ts

@@ -0,0 +1,28 @@
+import wrap from '../../src/wrapAstTransformation'
+import type { ASTTransformation } from '../../src/wrapAstTransformation'
+
+export const transformAST: ASTTransformation = ({ root, j }) => {
+  const importValuePrefix = 'element-plus/lib/locale/lang/'
+  // find element-ui lang import
+  const langImport = root.find(j.ImportDeclaration, node => {
+    return (
+      node.source.type === 'StringLiteral' &&
+      node.source.value?.startsWith(importValuePrefix)
+    )
+  })
+
+  if (langImport.length) {
+    langImport.replaceWith(({ node }) => {
+      const value = node.source.value as string
+      const lang = value.replace(importValuePrefix, '')
+      // if lang contains upper-case,converts to lower-case
+      if (/[A-Z]+/.test(lang)) {
+        node.source.value = importValuePrefix + lang.toLowerCase()
+      }
+      return node
+    })
+  }
+}
+
+export default wrap(transformAST)
+export const parser = 'babylon'