From f3e4b9a7b7a9e71aea9abb03079eff7c21d0647d Mon Sep 17 00:00:00 2001 From: Henry Zhu Date: Tue, 29 Nov 2016 08:32:46 -0500 Subject: [PATCH] add example [skip ci] --- .../README.md | 22 ++++++++++++++++++- 1 file changed, 21 insertions(+), 1 deletion(-) diff --git a/packages/babel-plugin-check-es2015-constants/README.md b/packages/babel-plugin-check-es2015-constants/README.md index 7e6c220cfb..4952fabcbf 100644 --- a/packages/babel-plugin-check-es2015-constants/README.md +++ b/packages/babel-plugin-check-es2015-constants/README.md @@ -1,6 +1,26 @@ # babel-plugin-check-es2015-constants -Validate ES2015 constants +Validate ES2015 constants (prevents reassignment of const variables). + +## Example + +**In** + +```js +const a = 1; +a = 2; +``` + +**Out** + +```bash +repl: "a" is read-only + 1 | const a = 1; +> 2 | a = 2; + | ^ +``` + +[Try in REPL](http://babeljs.io/repl/#?babili=false&evaluate=true&lineWrap=false&presets=es2015&experimental=false&loose=false&spec=false&code=const%20a%20%3D%201%3B%0Aa%20%3D%202%3B&playground=true) ## Installation