JSPM – datauri@3.0.0

Package Exports

datauri
datauri/parser

This package does not declare an exports field, so the exports above have been automatically detected and optimized by JSPM instead. If any package subpath is missing, it is recommended to post an issue to the original package (datauri) to support the "exports" field. If that is not possible, create a JSPM override to customize the exports field for this package.

Readme

Node.js Module and CLI to generate Data URI scheme.

The data URI scheme is a uniform resource identifier (URI) scheme that provides a way to include data in-line in web pages as if they were external resources.

from: Wikipedia

MODULE

For Node 8+ compatibility:

npm install --save datauri

Getting started

By default, datauri module returns a promise, which is resolved with data:uri string or rejected with file read error:

const datauri = require('datauri');

const content = await datauri('test/myfile.png');

console.log(content)
//=> "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAA..."

Callback style and meta data

const datauri = require('datauri');

datauri('test/myfile.png', (err, content, meta) => {
  if (err) {
      throw err;
  }

  console.log(content); //=> "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAA..."

  console.log(meta.mimetype); //=> "image/png"
  console.log(meta.base64); //=> "iVBORw0KGgoAAAANSUhEUgAA..."
  console.log(meta.getCSS()); //=> "\n.case {\n    background-image: url('data:image/png;base64,iVBORw..."
  console.log(meta.getCSS({
    class: "myClass",
    width: true,
    height: true
  })); //=> adds image width and height and custom class name
});

Synchronous calls

const Datauri = require('datauri/sync');
const meta = Datauri('test/myfile.png');

console.log(meta.content); //=> "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAA..."
console.log(meta.mimetype); //=> "image/png"
console.log(meta.base64); //=> "iVBORw0KGgoAAAANSUhEUgAA..."
console.log(meta.getCSS()); //=> "\n.case {\n    background-image: url('data:image/png;base64,iVBORw..."
console.log(meta.getCSS("myClass")); //=> "\n.myClass {\n    background-image: url('data:image/png;base64,iVBORw..."

From a Buffer

If you already have a file Buffer, that's the way to go:

const DatauriParser = require('datauri/parser');
const parser = new DatauriParser();

const buffer = fs.readFileSync('./hello');

parser.format('.png', buffer); //=> "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAA..."

From a string

const DatauriParser = require('datauri/parser');
const parser = new DatauriParser();

parser.format('.png', 'xkcd'); //=> "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAA..."

Contribute

$ npm install

To run test specs

$ npm test

ChangeLog

Requirements

Node.js 8+

Previous Node versions and deprecated features:

npm install --save datauri@2

docs: https://github.com/data-uri/datauri/blob/v2.0.0/docs/datauri.md

License

MIT License