fix: v-t argument evaluation (#39)

Author: kazupon

package.json

@@ -23,7 +23,9 @@
       "Type: Documentation": ":pencil: Documentation"
     }
   },
-  "dependencies": {},
+  "dependencies": {
+    "@babel/parser": "^7.9.6"
+  },
   "devDependencies": {
     "@vue/server-test-utils": "^1.0.0-beta.29",
     "@vue/test-utils": "^1.0.0-beta.29",
@@ -34,11 +36,11 @@
     "jest-serializer-vue": "^2.0.2",
     "lerna-changelog": "^1.0.0",
     "shipjs": "^0.18.0",
-    "vue": "^2.6.8",
-    "vue-i18n": "^8.9.0",
+    "vue": "^2.6.11",
+    "vue-i18n": "^8.17.0",
     "vue-jest": "^3.0.0",
-    "vue-server-renderer": "^2.6.8",
-    "vue-template-compiler": "^2.6.8"
+    "vue-server-renderer": "^2.6.11",
+    "vue-template-compiler": "^2.6.11"
   },
   "engines": {
     "node": ">= 10.0"

src/util.js

@@ -1,9 +1,4 @@
-const stringRE = /'(?:[^'\\]|\\.)*'|"(?:[^"\\]|\\.)*"|`(?:[^`\\]|\\.)*\$\{|\}(?:[^`\\]|\\.)*`|`(?:[^`\\]|\\.)*`/g
-const ecmaKeywordsRE = new RegExp('(?<!\\.)\\b' + (
-  'delete,typeof,instanceof,void,do,if,for,let,new,try,var,case,else,with,await,break,catch,class,const,' +
-  'alert,eval,super,throw,while,yield,delete,export,import,return,switch,default,' +
-  'extends,finally,continue,debugger,function,arguments'
-).split(',').join('\\b(?!\\.)|(?<!\\.)\\b') + '\\b(?!\\.)')
+const parser = require('@babel/parser')
 
 function warn (msg, err) {
   if (typeof console !== 'undefined') {
@@ -44,15 +39,16 @@ function removeAttr (el, name) {
 function evaluateValue (expression) {
   const ret = { status: 'ng', value: undefined }
 
-  if (expression.match(ecmaKeywordsRE)) { return ret }
-  if (!expression.match(stringRE)) { return ret }
-
   try {
-    const val = (new Function(`return ${expression.trim()}`))()
-    ret.status = 'ok'
-    ret.value = val
+    const ast = parser.parse(`const a = ${expression.trim()}`)
+    const node = ast.program.body[0].declarations[0].init
+    if (node.type === 'StringLiteral' || node.type === 'ObjectExpression') {
+      const val = (new Function(`return ${expression.trim()}`))()
+      ret.status = 'ok'
+      ret.value = val
+    }
   } catch (e) { }
-  
+
   return ret
 }