image2uri/lib/index.js

Convert image file to data URI.

import fs from 'fs';
import path from 'path';
import fetch from 'node-fetch';
export const validUrl = (url) => /http(s)?:\/\/(\w+:?\w*@)?(\S+)(:\d+)?((?<=\.)\w+)+(\/([\w#!:.?+=&%@!\-/])*)?/gi.test(url);
export const extTypeMap = {
    '.png': 'image/png',
    '.apng': 'image/apng',
    '.gif': 'image/gif',
    '.jpg': 'image/jpeg',
    '.jpeg': 'image/jpeg',
    '.bm': 'image/bmp',
    '.bmp': 'image/bmp',
    '.webp': 'image/webp',
    '.ico': 'image/x-icon',
    '.svg': 'image/svg+xml'
};
export default function image2uri(file, options = {}) {
    const ext = (options.ext || path.extname(file));
    const contentType = extTypeMap[ext];
    if (validUrl(file)) {
        return fetch(file).then((response) => response.buffer()).then((buffer) => {
            return contentType ? `data:${contentType};base64,${buffer.toString('base64')}` : buffer.toString('base64');
        });
    }
    const image = fs.readFileSync(file);
    return contentType ? `data:${contentType};base64,${image.toString('base64')}` : image.toString('base64');
}
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