31 lines
781 B
JavaScript
31 lines
781 B
JavaScript
const request = require('request-promise')
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const prefetch = async (element) => {
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const url = element.attr(`src`)
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let response
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try {
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response = await request({
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method: `GET`,
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url,
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resolveWithFullResponse: true
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})
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} catch (err) {
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WIKI.logger.warn(`Failed to prefetch ${url}`)
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WIKI.logger.warn(err)
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return
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}
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const contentType = response.headers[`content-type`]
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const image = Buffer.from(response.body).toString('base64')
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element.attr('src', `data:${contentType};base64,${image}`)
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element.removeClass('prefetch-candidate');
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}
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module.exports = {
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async init($) {
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const promises = $('img.prefetch-candidate').map((index, element) => {
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return prefetch($(element))
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}).toArray()
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await Promise.all(promises)
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}
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}
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