Skip to content

Syntax lookup: let \"" #242

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
merged 2 commits into from
Sep 7, 2021
Merged

Syntax lookup: let \"" #242

Changes from all commits
Commits
Show all changes
2 commits
Select commit Hold shift + click to select a range
aaf8d9e
Syntax Lookup: let binding invalid
kevanstannard Mar 7, 2021
a30be19
Update misc_docs/syntax/language_let_invalid.mdx
ryyppy Sep 7, 2021
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
35 changes: 35 additions & 0 deletions misc_docs/syntax/language_let_invalid.mdx
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -0,0 +1,35 @@
---
id: "let-binding-invalid"
keywords: ["let", "variable"]
name: "let \\\"\""
summary: "This is the `let binding` for invalid identifier names."
category: "languageconstructs"
---

`let \""` is used to bind values to names that are invalid in ReScript, including capitalized names, names with special characters, and reserved keywords.

**Warning: ** This escape hatch is almost exclusively used for interop with JavaScript. If you abuse this, many of the compiler guarantees will go away.

### Example

<CodeTab labels={["ReScript", "JS Output"]}>

```res
let \"ComponentName" = "Header"
let \"min-width" = 640
let \"exception" = true
```

```js
var ComponentName = "Header";
var min$width = 640;
var exception = true;
```

</CodeTab>

### References

* [Use Illegal Identifier Names](/docs/manual/latest/use-illegal-identifier-names)
* [Let binding](/docs/manual/latest/let-binding)
* [Reserved Keywords](/docs/manual/latest/reserved-keywords)