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# es/no-unicode-codepoint-escapes
> disallow Unicode code point escape sequences
- ✅ The following configurations enable this rule: `plugin:es/no-new-in-es2015`, `plugin:es/restrict-to-es3`, and `plugin:es/restrict-to-es5`
- 🔧 The `--fix` option on the [command line](https://eslint.org/docs/user-guide/command-line-interface#fixing-problems) can automatically fix some of the problems reported by this rule.
This rule reports ES2015 Unicode code point escape sequences as errors.
## Examples
⛔ Examples of **incorrect** code for this rule:
<eslint-playground type="bad" code="/*eslint es/no-unicode-codepoint-escapes: error */
const a\u{31} = `foo`
const a2 = "a\u{62}b"
" />
👌 Examples of **correct** code for this rule:
<eslint-playground type="good" code="/*eslint es/no-unicode-codepoint-escapes: error */
const a\u0031 = `foo`
const a2 = "a\u0062b"
" />
## 📚 References
- [Rule source](https://github.com/mysticatea/eslint-plugin-es/blob/v4.1.0/lib/rules/no-unicode-codepoint-escapes.js)
- [Test source](https://github.com/mysticatea/eslint-plugin-es/blob/v4.1.0/tests/lib/rules/no-unicode-codepoint-escapes.js)
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