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overlooker-element-timing

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overlooker-element-timing - npm Package Compare versions

Comparing version 0.1.1 to 0.2.0

.babelrc

18

package.json
{
"name": "overlooker-element-timing",
"version": "0.1.1",
"version": "0.2.0",
"description": "The package for measuring the element timing is more simple",
"main": "index.js",
"scripts": {
"test": "echo \"Error: no test specified\" && exit 1"
"build": "rollup -c",
"watch": "rollup -c -w",
"prepublish": "npm run build",
"test": "jest"
},

@@ -14,3 +17,12 @@ "repository": {

"author": "Nikolay Ryabov",
"license": "SEE LICENSE IN LICENSE"
"license": "SEE LICENSE IN LICENSE",
"dependencies": {},
"devDependencies": {
"@babel/core": "^7.9.0",
"@babel/preset-env": "^7.9.0",
"jest": "^25.3.0",
"rollup": "^2.3.3",
"rollup-plugin-babel": "^4.4.0",
"rollup-plugin-uglify": "^6.0.4"
}
}

@@ -9,3 +9,35 @@ # overlooker-element-timing

### Usage
Adding the Overlooker Element Timing is a two-step process.
First you need to add a snippet of code to the head of your document (before any other scripts run).
This snippet creates a PerformanceObserver instance and starts observing element entry types.
```js
if (!window.oet) {window.oet = [];}if (PerformanceObserver) {new PerformanceObserver(function (l) {window.oet.push.apply(window.oet, l.getEntries());}).observe({ entryTypes: ['element'] });}
```
*__Note:__ You can use something else instead of `oet`, but you should put this string in the OverlookerElementTiming constructor as the first argument.*
Second step is to import the module in your application and subscribe to it
```js
import OverlookerElementTiming from 'overlooker-element-timing';
// you can put the name of the global variable that you used for store entries, in the first argument (default = 'oet')
const overlookerElementTiming = new OverlookerElementTiming();
overlookerElementTiming.observe((entry) => {
// entry object contains element timing data in readable form
// use it according to your need
}, true); // set to true, if you want to receive already handled entries;
// for getting already handled entries
overlookerElementTiming.getAll().forEach((entry) => {
// handle
});
```
If you want to use this script in embedded version (with script tag), you can put the ./dist/index.min.js anywhere and use it from global namespace
```js
window.oet.observe(() => {
// ...
});
```
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