Merge pull request #246 from kevanstannard/syntax-lookup-external

Syntax lookup: external

Author: ryyppy

misc_docs/syntax/language_external.mdx

@@ -0,0 +1,36 @@
+---
+id: "external"
+keywords: ["external", "javascript"]
+name: "external"
+summary: "This is the `external binding` keyword."
+category: "languageconstructs"
+---
+
+`external` is used to bind ReScript code to [external JS code](/docs/manual/latest/external), including bindings to [global values](/docs/manual/latest/bind-to-global-js-values), [modules](/docs/manual/latest/import-from-export-to-js#import-from-javascript), [functions](/docs/manual/latest/bind-to-js-function) and [objects](/docs/manual/latest/bind-to-js-object).
+
+
+### Example 
+
+<CodeTab labels={["ReScript", "JS Output"]}>
+
+```res
+@module("path")
+external dirname: string => string = "dirname"
+
+let root = dirname("/User/github")
+```
+
+```js
+var Path = require("path");
+var root = Path.dirname("/User/github");
+```
+
+</CodeTab>
+
+### References
+
+* [External (Bind to Any JS Library)](/docs/manual/latest/external)
+* [Bind to JS Object](/docs/manual/latest/bind-to-js-object)
+* [Bind to JS Function](/docs/manual/latest/bind-to-js-function)
+* [Import From JavaScript](/docs/manual/latest/import-from-export-to-js#import-from-javascript)
+* [Bind to Global JS Values](/docs/manual/latest/bind-to-global-js-values)