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minifyfromhtml/node_modules/babel-helper-evaluate-path/README.md
2018-05-05 13:54:07 +02:00

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# babel-helper-evaluate-path
A wrapper for babel's `path.evaluate`
Fixes / Features:
+ Detect usages before initialization / declaration
```js
function foo() {
console.log(b); // ReferenceError
let b = 1;
}
function bar() {
console.log(a); // a is void 0
var a = 5;
console.log(a); // 5
}
```
+ Detect usages in scopes outside of initialization for vars (hoisted)
```js
function foo() {
if (a) var x = 5;
console.log(x); // cannot determine
}
```
## Installation
```sh
npm install babel-helper-evaluate-path
```