add some babel stuff

node_modules/@babel/template/README.md

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+# @babel/template
+
+> Generate an AST from a string template or template literal.
+
+In computer science, this is known as an implementation of quasiquotes.
+
+## Install
+
+```sh
+npm install --save-dev @babel/template
+```
+
+## String Usage
+
+```js
+import template from "@babel/template";
+import generate from "@babel/generator";
+import * as t from "@babel/types";
+
+const buildRequire = template(`
+  var IMPORT_NAME = require(SOURCE);
+`);
+
+const ast = buildRequire({
+  IMPORT_NAME: t.identifier("myModule"),
+  SOURCE: t.stringLiteral("my-module")
+});
+
+console.log(generate(ast).code);
+```
+
+```js
+const myModule = require("my-module");
+```
+
+### `.ast`
+
+If no placeholders are in use and you just want a simple way to parse a
+string into an AST, you can use the `.ast` version of the template.
+
+```js
+const ast = template.ast(`
+  var myModule = require("my-module");
+`);
+```
+which will parse and return the AST directly.
+
+
+## Template Literal Usage
+
+```js
+import template from "@babel/template";
+import generate from "@babel/generator";
+import * as t from "@babel/types";
+
+const fn = template`
+  var IMPORT_NAME = require('${"my-module"}');
+`);
+
+const ast = fn({
+  IMPORT_NAME: t.identifier("myModule");
+});
+
+console.log(generate(ast).code);
+```
+
+Note that placeholders can be passed directly as part of the template literal
+in order to make things as readable as possible, or they can be passed into
+the template function.
+
+### `.ast`
+
+If no placeholders are in use and you just want a simple way to parse a
+string into an AST, you can use the `.ast` version of the template.
+
+```js
+const name = "my-module";
+const mod = "myModule";
+
+const ast = template.ast`
+  var ${mod} = require("${name}");
+`;
+```
+which will parse and return the AST directly. Note that unlike the string-based
+version mentioned earlier, since this is a template literal, it is still
+valid to perform replacements using template literal replacements.
+
+
+## AST results
+
+The `@babel/template` API exposes a few flexible APIs to make it as easy as
+possible to create ASTs with an expected structure. Each of these also has
+the `.ast` property mentioned above.
+
+### `template`
+
+`template` returns either a single statement, or an array of
+statements, depending on the parsed result.
+
+### `template.smart`
+
+This is the same as the default `template` API, returning either a single
+node, or an array of nodes, depending on the parsed result.
+
+### `template.statement`
+
+`template.statement("foo;")()` returns a single statement node, and throw
+an exception if the result is anything but a single statement.
+
+### `template.statements`
+
+`template.statements("foo;foo;")()` returns an array of statement nodes.
+
+### `template.expression`
+
+`template.expression("foo")()` returns the expression node.
+
+### `template.program`
+
+`template.program("foo;")()` returns the `Program` node for the template.
+
+
+## API
+
+### `template(code, [opts])`
+
+#### code
+
+Type: `string`
+
+#### options
+
+`@babel/template` accepts all of the options from [babylon](https://github.com/babel/babel/tree/master/packages/babylon), and specifies
+some defaults of its own:
+
+* `allowReturnOutsideFunction` is set to `true` by default.
+* `allowSuperOutsideMethod` is set to `true` by default.
+* `sourceType` is set to `module` by default.
+
+##### placeholderWhitelist
+
+Type: `Set<string>`
+Default: `undefined`
+
+A set of placeholder names to automatically accept. Items in this list do
+not need to match the given placeholder pattern.
+
+##### placeholderPattern
+
+Type: `RegExp | false`
+Default: `/^[_$A-Z0-9]+$/`
+
+A pattern to search for when looking for Identifier and StringLiteral
+nodes that should be considered placeholders.
+'false' will disable placeholder searching entirely, leaving only the
+'placeholderWhitelist' value to find placeholders.
+
+##### preserveComments
+
+Type: `boolean`
+Default: `false`
+
+Set this to `true` to preserve any comments from the `code` parameter.
+
+#### Return value
+
+By default `@babel/template` returns a `function` which is invoked with an
+optional object of replacements. See the usage section for an example.
+
+When using `.ast`, the AST will be returned directly.
+
+[babylon]: https://github.com/babel/babylon#options