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+# @babel/plugin-proposal-numeric-separator
+
+> This plugin allows Babel to transform Decimal, Binary, Hex and Octal literals containing Numeric Literal Separator to their non-separated form.
+
+## Example
+
+### Decimal Literals
+
+```js
+let budget = 1_000_000_000_000;
+
+// What is the value of `budget`? It's 1 trillion!
+//
+// Let's confirm:
+console.log(budget === 10 ** 12); // true
+```
+
+### Binary Literals
+
+```js
+let nibbles = 0b1010_0001_1000_0101;
+
+// Is bit 7 on? It sure is!
+// 0b1010_0001_1000_0101
+//             ^
+//
+// We can double check:
+console.log(!!(nibbles & (1 << 7))); // true
+```
+
+### Hex Literal
+
+```js
+// Messages are sent as 24 bit values, but should be
+// treated as 3 distinct bytes:
+let message = 0xA0_B0_C0;
+
+// What's the value of the upper most byte? It's A0, or 160.
+// We can confirm that:
+let a = (message >> 16) & 0xFF;
+console.log(a.toString(16), a); // a0, 160
+
+// What's the value of the middle byte? It's B0, or 176.
+// Let's just make sure...
+let b = (message >> 8) & 0xFF;
+console.log(b.toString(16), b); // b0, 176
+
+// What's the value of the lower most byte? It's C0, or 192.
+// Again, let's prove that:
+let c = message & 0xFF;
+console.log(c.toString(16), b); // c0, 192
+```
+
+### Octal Literal
+
+*hand wave emoji*
+
+Octals are great for permissions, but also look better when represented in `0o0000` form. No real benefit with separators here.
+
+## Installation
+
+```sh
+npm install --save-dev @babel/plugin-proposal-numeric-separator
+```
+
+## Usage
+
+### Via `.babelrc` (Recommended)
+
+**.babelrc**
+
+```json
+{
+  "plugins": ["@babel/plugin-proposal-numeric-separator"]
+}
+```
+
+### Via CLI
+
+```sh
+babel --plugins @babel/plugin-proposal-numeric-separator script.js
+```
+
+### Via Node API
+
+```javascript
+require("@babel/core").transform("code", {
+  plugins: ["@babel/plugin-proposal-numeric-separator"]
+});
+```
+
+## Additional Information
+
+If you need to further compile ES2015 Decimal, Binary, Hex and Octal number representations to their pre-ES2015 numeric literal form, add the [`"@babel/plugin-transform-literals"`](http://babeljs.io/docs/plugins/transform-literals/) plugin:
+
+> `@babel/plugin-transform-literals` is already included in [@babel/preset-env](https://github.com/babel/babel/tree/master/packages/babel-preset-env) and @babel/preset-es2015.
+
+### Via `.babelrc` (Recommended)
+
+**.babelrc**
+
+```json
+{
+  "presets": ["@babel/preset-env"],
+  "plugins": ["@babel/plugin-proposal-numeric-separator"]
+}
+{
+  "plugins": ["@babel/plugin-proposal-numeric-separator", "@babel/plugin-transform-literals"]
+}
+```
+
+## References
+
+* [Proposal: Numeric Separators](https://github.com/samuelgoto/proposal-numeric-separator)