add some babel stuff

node_modules/@babel/code-frame/README.md

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+# @babel/code-frame
+
+> Generate errors that contain a code frame that point to source locations.
+
+## Install
+
+```sh
+npm install --save-dev @babel/code-frame
+```
+
+## Usage
+
+```js
+import { codeFrameColumns } from '@babel/code-frame';
+
+const rawLines = `class Foo {
+  constructor()
+}`;
+const location = { start: { line: 2, column: 16 } };
+
+const result = codeFrameColumns(rawLines, location, { /* options */ });
+
+console.log(result);
+```
+
+```
+  1 | class Foo {
+> 2 |   constructor()
+    |                ^
+  3 | }
+```
+
+If the column number is not known, you may omit it.
+
+You can also pass an `end` hash in `location`.
+
+```js
+import { codeFrameColumns } from '@babel/code-frame';
+
+const rawLines = `class Foo {
+  constructor() {
+    console.log("hello");
+  }
+}`;
+const location = { start: { line: 2, column: 17 }, end: { line: 4, column: 3 } };
+
+const result = codeFrameColumns(rawLines, location, { /* options */ });
+
+console.log(result);
+```
+
+```
+  1 | class Foo {
+> 2 |   constructor() {
+    |                 ^
+> 3 |     console.log("hello");
+    | ^^^^^^^^^^^^^^^^^^^^^^^^^
+> 4 |   }
+    | ^^^
+  5 | };
+```
+
+## Options
+
+### `highlightCode`
+
+`boolean`, defaults to `false`.
+
+Toggles syntax highlighting the code as JavaScript for terminals.
+
+
+### `linesAbove`
+
+`number`, defaults to `2`.
+
+Adjust the number of lines to show above the error.
+
+### `linesBelow`
+
+`number`, defaults to `3`.
+
+Adjust the number of lines to show below the error.
+
+### `forceColor`
+
+`boolean`, defaults to `false`.
+
+Enable this to forcibly syntax highlight the code as JavaScript (for non-terminals); overrides `highlightCode`.
+
+### `message`
+
+`string`, otherwise nothing
+
+Pass in a string to be displayed inline (if possible) next to the highlighted
+location in the code. If it can't be positioned inline, it will be placed above
+the code frame.
+
+```
+1 | class Foo {
+> 2 |   constructor()
+  |                ^ Missing {
+3 | };
+```
+
+## Upgrading from prior versions
+
+Prior to version 7, the only API exposed by this module was for a single line and optional column pointer. The old API will now log a deprecation warning.
+
+The new API takes a `location` object, similar to what is available in an AST.
+
+This is an example of the deprecated (but still available) API:
+
+```js
+import codeFrame from '@babel/code-frame';
+
+const rawLines = `class Foo {
+  constructor()
+}`;
+const lineNumber = 2;
+const colNumber = 16;
+
+const result = codeFrame(rawLines, lineNumber, colNumber, { /* options */ });
+
+console.log(result);
+```
+
+To get the same highlighting using the new API:
+
+```js
+import { codeFrameColumns } from '@babel/code-frame';
+
+const rawLines = `class Foo {
+  constructor() {
+    console.log("hello");
+  }
+}`;
+const location = { start: { line: 2, column: 16 } };
+
+const result = codeFrameColumns(rawLines, location, { /* options */ });
+
+console.log(result);
+```