feat: add platform-loader (#480)

* feat: add platform-loader

* chore: lint

* Update package.json

Co-authored-by: 水澜 <shuilan.cj@taobao.com>

packages/platform-loader/README.md

@@ -0,0 +1,3 @@
+# rax-platform-loader [![npm](https://img.shields.io/npm/v/rax-platform-loader.svg)](https://www.npmjs.com/package/rax-platform-loader)
+
+For helping remove other platform code.

packages/platform-loader/package.json

@@ -0,0 +1,24 @@
+{
+  "name": "rax-platform-loader",
+  "version": "1.0.0",
+  "description": "rax platform loader for helping remove other platform code",
+  "license": "BSD-3-Clause",
+  "main": "lib/index.js",
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/raxjs/rax-scripts.git"
+  },
+  "bugs": {
+    "url": "https://github.com/raxjs/rax-scripts/issues"
+  },
+  "homepage": "https://github.com/raxjs/rax-scripts/tree/master/packages/platform-loader#readme",
+  "dependencies": {
+    "@babel/code-frame": "^7.5.5",
+    "@babel/generator": "^7.6.4",
+    "@babel/parser": "^7.6.4",
+    "@babel/traverse": "^7.6.3",
+    "@babel/types": "^7.6.3",
+    "loader-utils": "^1.1.0",
+    "source-map": "^0.7.3"
+  }
+}

packages/rax-compile-config/src/platformLoader/TraverseImport.js → packages/platform-loader/src/TraverseImport.js

@@ -3,7 +3,7 @@ const babelParser = require('@babel/parser');
 const traverse = require('@babel/traverse').default;
 const types = require('@babel/types');
 const generate = require('@babel/generator').default;
-const codeFrame = require('@babel/code-frame').default;
+const { codeFrameColumns } = require('@babel/code-frame').default;
 
 module.exports = function traverseImport(options, inputSource, sourceMapOption) {
   let specified; // Collector import specifiers
@@ -102,17 +102,21 @@ module.exports = function traverseImport(options, inputSource, sourceMapOption)
     });
   } catch (err) {
     if (err instanceof SyntaxError) {
-      err.lineNumber = err.loc.line;
-      err.column = err.loc.column + 1;
+      const location = {
+        start: {
+          line: err.loc.line,
+          column: err.loc.column + 1
+        }
+      };
 
       // remove trailing "(LINE:COLUMN)" acorn message and add in esprima syntax error message start
-      err.message = `Line ${err.lineNumber}: ${err.message.replace(/ \((\d+):(\d+)\)$/, '')
-        // add codeframe
+      console.log(`Line ${err.lineNumber}: ${err.message.replace(/ \((\d+):(\d+)\)$/, '')
+      // add codeframe
       }\n\n${
-        codeFrame(inputSource, err.lineNumber, err.column, { highlightCode: true })}`;
+        codeFrameColumns(inputSource, location, { highlightCode: true })}`);
+    } else {
+      console.log(err);
     }
-
-    throw err;
   }
 
   traverse(ast, {