From 4da4728bf5e1f46c02447a9f400be09e6c5cdbfe Mon Sep 17 00:00:00 2001
From: Logan Smyth <loganfsmyth@gmail.com>
Date: Mon, 16 Apr 2018 13:45:43 -0700
Subject: [PATCH] Add an example of an extremely bad sourcemap merge.

---
 .../input-source-map.json                     |  12 ++
 .../input-source-map-complex/input.mjs        | 113 +++++++++++++++++
 .../input-source-map-complex/options.json     |   5 +
 .../input-source-map-complex/output.js        | 120 ++++++++++++++++++
 .../input-source-map-complex/source-map.json  |  12 ++
 .../source-mappings.json                      |  82 ++++++++++++
 packages/babel-helper-fixtures/src/index.js   |   5 +
 .../src/index.js                              |   1 +
 8 files changed, 350 insertions(+)
 create mode 100644 packages/babel-core/test/fixtures/transformation/source-maps/input-source-map-complex/input-source-map.json
 create mode 100644 packages/babel-core/test/fixtures/transformation/source-maps/input-source-map-complex/input.mjs
 create mode 100644 packages/babel-core/test/fixtures/transformation/source-maps/input-source-map-complex/options.json
 create mode 100644 packages/babel-core/test/fixtures/transformation/source-maps/input-source-map-complex/output.js
 create mode 100644 packages/babel-core/test/fixtures/transformation/source-maps/input-source-map-complex/source-map.json
 create mode 100644 packages/babel-core/test/fixtures/transformation/source-maps/input-source-map-complex/source-mappings.json

diff --git a/packages/babel-core/test/fixtures/transformation/source-maps/input-source-map-complex/input-source-map.json b/packages/babel-core/test/fixtures/transformation/source-maps/input-source-map-complex/input-source-map.json
new file mode 100644
index 0000000000..2297724483
--- /dev/null
+++ b/packages/babel-core/test/fixtures/transformation/source-maps/input-source-map-complex/input-source-map.json
@@ -0,0 +1,12 @@
+{
+  "version": 3,
+  "sources": [
+    "HelloWorld.vue"
+  ],
+  "names": [],
+  "mappings": ";;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;AAsFA;AACA;AACA;AACA;AACA;AACA;AACA;AACA",
+  "sourceRoot": "src/components",
+  "sourcesContent": [
+    "<template>\n  <div class=\"hello\">\n    <h1>{{ msg }}</h1>\n    <h2>Essential Links</h2>\n    <ul>\n      <li>\n        <a\n          href=\"https://vuejs.org\"\n          target=\"_blank\"\n        >\n          Core Docs\n        </a>\n      </li>\n      <li>\n        <a\n          href=\"https://forum.vuejs.org\"\n          target=\"_blank\"\n        >\n          Forum\n        </a>\n      </li>\n      <li>\n        <a\n          href=\"https://chat.vuejs.org\"\n          target=\"_blank\"\n        >\n          Community Chat\n        </a>\n      </li>\n      <li>\n        <a\n          href=\"https://twitter.com/vuejs\"\n          target=\"_blank\"\n        >\n          Twitter\n        </a>\n      </li>\n      <br>\n      <li>\n        <a\n          href=\"http://vuejs-templates.github.io/webpack/\"\n          target=\"_blank\"\n        >\n          Docs for This Template\n        </a>\n      </li>\n    </ul>\n    <h2>Ecosystem</h2>\n    <ul>\n      <li>\n        <a\n          href=\"http://router.vuejs.org/\"\n          target=\"_blank\"\n        >\n          vue-router\n        </a>\n      </li>\n      <li>\n        <a\n          href=\"http://vuex.vuejs.org/\"\n          target=\"_blank\"\n        >\n          vuex\n        </a>\n      </li>\n      <li>\n        <a\n          href=\"http://vue-loader.vuejs.org/\"\n          target=\"_blank\"\n        >\n          vue-loader\n        </a>\n      </li>\n      <li>\n        <a\n          href=\"https://github.com/vuejs/awesome-vue\"\n          target=\"_blank\"\n        >\n          awesome-vue\n        </a>\n      </li>\n    </ul>\n  </div>\n</template>\n\n<script>\nexport default {\n  name: 'HelloWorld',\n  data () {\n    return {\n      msg: 'Welcome to Your Vue.js App'\n    }\n  }\n}\n</script>\n\n<!-- Add \"scoped\" attribute to limit CSS to this component only -->\n<style scoped>\nh1, h2 {\n  font-weight: normal;\n}\nul {\n  list-style-type: none;\n  padding: 0;\n}\nli {\n  display: inline-block;\n  margin: 0 10px;\n}\na {\n  color: #42b983;\n}\n</style>\n"
+  ]
+}
diff --git a/packages/babel-core/test/fixtures/transformation/source-maps/input-source-map-complex/input.mjs b/packages/babel-core/test/fixtures/transformation/source-maps/input-source-map-complex/input.mjs
new file mode 100644
index 0000000000..7188e524b2
--- /dev/null
+++ b/packages/babel-core/test/fixtures/transformation/source-maps/input-source-map-complex/input.mjs
@@ -0,0 +1,113 @@
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+
+//
+export default {
+  name: 'HelloWorld',
+  data () {
+    return {
+      msg: 'Welcome to Your Vue.js App'
+    }
+  }
+}
+//
+
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
diff --git a/packages/babel-core/test/fixtures/transformation/source-maps/input-source-map-complex/options.json b/packages/babel-core/test/fixtures/transformation/source-maps/input-source-map-complex/options.json
new file mode 100644
index 0000000000..8b5e8767af
--- /dev/null
+++ b/packages/babel-core/test/fixtures/transformation/source-maps/input-source-map-complex/options.json
@@ -0,0 +1,5 @@
+{
+  "plugins": [
+    "transform-modules-commonjs"
+  ]
+}
diff --git a/packages/babel-core/test/fixtures/transformation/source-maps/input-source-map-complex/output.js b/packages/babel-core/test/fixtures/transformation/source-maps/input-source-map-complex/output.js
new file mode 100644
index 0000000000..5abbe8e6bc
--- /dev/null
+++ b/packages/babel-core/test/fixtures/transformation/source-maps/input-source-map-complex/output.js
@@ -0,0 +1,120 @@
+"use strict";
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.default = void 0;
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+var _default = {
+  name: 'HelloWorld',
+
+  data() {
+    return {
+      msg: 'Welcome to Your Vue.js App'
+    };
+  }
+
+}; //
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+
+exports.default = _default;
diff --git a/packages/babel-core/test/fixtures/transformation/source-maps/input-source-map-complex/source-map.json b/packages/babel-core/test/fixtures/transformation/source-maps/input-source-map-complex/source-map.json
new file mode 100644
index 0000000000..d859858ec2
--- /dev/null
+++ b/packages/babel-core/test/fixtures/transformation/source-maps/input-source-map-complex/source-map.json
@@ -0,0 +1,12 @@
+{
+  "version": 3,
+  "sources": [
+    "HelloWorld.vue"
+  ],
+  "names": [],
+  "mappings": ";;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;AAsFA;;QAEA;;SACA;;WAEA,AACA;AAFA;AAGA;;AANA",
+  "sourceRoot": "src/components",
+  "sourcesContent": [
+    "<template>\n  <div class=\"hello\">\n    <h1>{{ msg }}</h1>\n    <h2>Essential Links</h2>\n    <ul>\n      <li>\n        <a\n          href=\"https://vuejs.org\"\n          target=\"_blank\"\n        >\n          Core Docs\n        </a>\n      </li>\n      <li>\n        <a\n          href=\"https://forum.vuejs.org\"\n          target=\"_blank\"\n        >\n          Forum\n        </a>\n      </li>\n      <li>\n        <a\n          href=\"https://chat.vuejs.org\"\n          target=\"_blank\"\n        >\n          Community Chat\n        </a>\n      </li>\n      <li>\n        <a\n          href=\"https://twitter.com/vuejs\"\n          target=\"_blank\"\n        >\n          Twitter\n        </a>\n      </li>\n      <br>\n      <li>\n        <a\n          href=\"http://vuejs-templates.github.io/webpack/\"\n          target=\"_blank\"\n        >\n          Docs for This Template\n        </a>\n      </li>\n    </ul>\n    <h2>Ecosystem</h2>\n    <ul>\n      <li>\n        <a\n          href=\"http://router.vuejs.org/\"\n          target=\"_blank\"\n        >\n          vue-router\n        </a>\n      </li>\n      <li>\n        <a\n          href=\"http://vuex.vuejs.org/\"\n          target=\"_blank\"\n        >\n          vuex\n        </a>\n      </li>\n      <li>\n        <a\n          href=\"http://vue-loader.vuejs.org/\"\n          target=\"_blank\"\n        >\n          vue-loader\n        </a>\n      </li>\n      <li>\n        <a\n          href=\"https://github.com/vuejs/awesome-vue\"\n          target=\"_blank\"\n        >\n          awesome-vue\n        </a>\n      </li>\n    </ul>\n  </div>\n</template>\n\n<script>\nexport default {\n  name: 'HelloWorld',\n  data () {\n    return {\n      msg: 'Welcome to Your Vue.js App'\n    }\n  }\n}\n</script>\n\n<!-- Add \"scoped\" attribute to limit CSS to this component only -->\n<style scoped>\nh1, h2 {\n  font-weight: normal;\n}\nul {\n  list-style-type: none;\n  padding: 0;\n}\nli {\n  display: inline-block;\n  margin: 0 10px;\n}\na {\n  color: #42b983;\n}\n</style>\n"
+  ]
+}
diff --git a/packages/babel-core/test/fixtures/transformation/source-maps/input-source-map-complex/source-mappings.json b/packages/babel-core/test/fixtures/transformation/source-maps/input-source-map-complex/source-mappings.json
new file mode 100644
index 0000000000..21079a86cc
--- /dev/null
+++ b/packages/babel-core/test/fixtures/transformation/source-maps/input-source-map-complex/source-mappings.json
@@ -0,0 +1,82 @@
+[
+  {
+    "generated": {
+      "line": 91,
+      "column": 0
+    },
+    "original": {
+      "line": 87,
+      "column": 0
+    }
+  },
+  {
+    "generated": {
+      "line": 92,
+      "column": 0
+    },
+    "original": {
+      "line": null,
+      "column": null
+    }
+  },
+  {
+    "generated": {
+      "line": 93,
+      "column": 0
+    },
+    "original": {
+      "line": null,
+      "column": null
+    }
+  },
+  {
+    "generated": {
+      "line": 93,
+      "column": 9
+    },
+    "original": {
+      "line": 89,
+      "column": 0
+    }
+  },
+  {
+    "generated": {
+      "line": 94,
+      "column": 9
+    },
+    "original": {
+      "line": null,
+      "column": null
+    }
+  },
+  {
+    "generated": {
+      "line": 95,
+      "column": 9
+    },
+    "original": {
+      "line": 90,
+      "column": 0
+    }
+  },
+  {
+    "generated": {
+      "line": 96,
+      "column": 0
+    },
+    "original": {
+      "line": null,
+      "column": null
+    }
+  },
+  {
+    "generated": {
+      "line": 97,
+      "column": 12
+    },
+    "original": {
+      "line": 92,
+      "column": 0
+    }
+  }
+]
diff --git a/packages/babel-helper-fixtures/src/index.js b/packages/babel-helper-fixtures/src/index.js
index dcf01d8b61..d27772495e 100644
--- a/packages/babel-helper-fixtures/src/index.js
+++ b/packages/babel-helper-fixtures/src/index.js
@@ -196,6 +196,11 @@ export default function get(entryLoc): Array<Suite> {
       if (fs.existsSync(sourceMapLoc)) {
         test.sourceMap = JSON.parse(readFile(sourceMapLoc));
       }
+
+      const inputMapLoc = taskDir + "/input-source-map.json";
+      if (fs.existsSync(inputMapLoc)) {
+        test.inputSourceMap = JSON.parse(readFile(inputMapLoc));
+      }
     }
   }
 
diff --git a/packages/babel-helper-transform-fixture-test-runner/src/index.js b/packages/babel-helper-transform-fixture-test-runner/src/index.js
index fde5f91326..077645297e 100644
--- a/packages/babel-helper-transform-fixture-test-runner/src/index.js
+++ b/packages/babel-helper-transform-fixture-test-runner/src/index.js
@@ -325,6 +325,7 @@ function run(task) {
         sourceFileName: self.filename,
         sourceType: "script",
         babelrc: false,
+        inputSourceMap: task.inputSourceMap || undefined,
       },
       opts,
     );