feat(handler): merge handler support yaml/yml file

Author: Val-istar-Guo

package.json

@@ -62,6 +62,7 @@
     "merge-deep": "^3.0.2",
     "micromatch": "^4.0.2",
     "mustache": "^3.0.1",
+    "node-yaml": "^3.2.0",
     "sanitization": "^0.3.0",
     "semver": "^6.0.0",
     "sha1": "^1.1.1",

src/handlers/merge/index.js

@@ -4,6 +4,7 @@ const createHandler = require('../create-handler')
 const readTargetFile = require('../read-target-file')
 const mergeJson = require('./merge-json')
 const mergeIgnore = require('./merge-ignore')
+const mergeYaml = require('./merge-yaml')
 
 
 module.exports = createHandler(file => {
@@ -12,6 +13,8 @@ module.exports = createHandler(file => {
   if (file.targetFile.exist) {
     if (extname(file.targetPath) === '.json') {
       return mergeJson(file)
+    } else if (['.yaml', '.yml'].includes(extname(file.targetPath))) {
+      return mergeYaml(file)
     } else if (['.gitignore', '.npmignore'].includes(basename(file.targetPath))) {
       return mergeIgnore(file)
     } else {

src/handlers/merge/merge-yaml.js

@@ -0,0 +1,36 @@
+const yaml = require('node-yaml')
+const merge = require('merge-deep')
+const log = require('../../utils/log')
+
+
+module.exports = file => {
+  let content = ''
+  let targetFileContent = ''
+
+  try {
+    content = yaml.parse(file.content)
+  } catch (e) {
+    log.error('merge', [
+      'The template file and the project file failed to merge due to a json syntax error in the template file.',
+      'The project file will be overwritten directly by the template file.',
+      `path: ${file.targetPath}`,
+    ].join('\n'))
+    return file
+  }
+
+  try {
+    targetFileContent = yaml.parse(file.targetFile.content)
+  } catch (e) {
+    log.error('merge', [
+      'The template file and the project file failed to merge due to a yaml syntax error in the project file.',
+      'The project file will be overwritten directly by the template file.',
+      `path: ${file.targetPath}`,
+    ].join('\n'))
+    return file
+  }
+
+  return {
+    ...file,
+    content: yaml.dump(merge(targetFileContent, content)),
+  }
+}