57 lines
2.1 KiB
JavaScript
57 lines
2.1 KiB
JavaScript
// Inject intl statements into a Svelte v2 HTML file as well as some JS files like timeago.js
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// We do this for perf reasons, to make the output smaller and avoid needing to have a huge JSON file of translations
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import { get } from 'lodash-es'
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import parse from 'format-message-parse'
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import { DEFAULT_LOCALE, LOCALE } from '../src/routes/_static/intl'
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import path from 'path'
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const intl = require(path.join(__dirname, '../src/intl', LOCALE + '.js')).default
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const defaultIntl = require(path.join(__dirname, '../src/intl', DEFAULT_LOCALE + '.js')).default
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function warningOrError (message) { // avoid crashing the whole server on `yarn dev`
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if (process.env.NODE_ENV === 'production') {
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throw new Error(message)
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}
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console.warn(message)
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return '(Placeholder intl string)'
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}
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function getIntl (path) {
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const res = get(intl, path, get(defaultIntl, path))
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if (typeof res !== 'string') {
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return warningOrError('Unknown intl string: ' + JSON.stringify(path))
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}
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return res
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}
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function trimWhitespace (str) {
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return str.trim().replace(/\s+/g, ' ')
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}
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export default function (source) {
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const res = source
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// replace {@intl.foo}
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.replace(/{intl\.([^}]+)}/g, (match, p1) => trimWhitespace(getIntl(p1)))
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// replace {@html intl.foo}
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.replace(/{@html intl\.([^}]+)}/g, (match, p1) => {
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const html = trimWhitespace(getIntl(p1))
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return `{@html ${JSON.stringify(html)}}`
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})
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// replace formatIntl('intl.foo' which requires the full AST object
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.replace(/formatIntl\('intl\.([^']+)'/g, (match, p1) => {
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const text = trimWhitespace(getIntl(p1))
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const ast = parse(text)
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return `formatIntl(${JSON.stringify(ast)}`
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})
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// replace 'intl.foo', which doesn't require the AST, just the string
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.replace(/'intl\.([^']+)'/g, (match, p1) => {
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const text = trimWhitespace(getIntl(p1))
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return JSON.stringify(text)
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})
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const match = res.match(/[^(][^']intl\.([\w.]+)/) || res.match(/formatIntl\('([\w.]+)/)
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if (match) {
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return warningOrError('You probably made a typo with an intl string: ' + match[1])
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}
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return res
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}
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