fix(parse): 🐛 Fix escaped quotes in string

Author: vivaxy

lib/__tests__/fixtures/parse/literal-001/input.js

@@ -0,0 +1 @@
+'\''

lib/__tests__/fixtures/parse/literal-001/output.json

@@ -0,0 +1,12 @@
+{
+  "type": "Program",
+  "body": [
+    {
+      "type": "ExpressionStatement",
+      "expression": {
+        "type": "Literal",
+        "value": "'"
+      }
+    }
+  ]
+}

lib/parse.js

@@ -78,9 +78,11 @@ module.exports = function parse(input) {
       if (isStringStart(code)) {
         const startIndex = i;
         const endIndex = getStringEndIndex(code, startIndex, input);
-        consumeNode(
-          new astFactory.Literal(input.slice(startIndex + 1, endIndex))
-        );
+        const quote = String.fromCharCode(code);
+        const string = input
+          .slice(startIndex + 1, endIndex)
+          .replace(new RegExp('\\\\' + quote, 'g'), quote);
+        consumeNode(new astFactory.Literal(string));
         i = endIndex + 1;
         continue;
       }
@@ -591,6 +593,7 @@ function getStringEndIndex(startCode, startIndex, input) {
     i++;
     code = input.charCodeAt(i);
     if (code === codes['\\']) {
+      i++;
       continue;
     }
     if (code === startCode) {