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e803807dd9
See [`no-param-reassign`](https://eslint.org/docs/rules/no-param-reassign) for more information. This change enables `no-param-reassign` and fixes the issues raised by the rule.
35 lines
1013 B
JavaScript
35 lines
1013 B
JavaScript
/**
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* Switch the CSS stylesheet used between 'rtl' and 'ltr'
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* @param {('ltr' | 'rtl' | 'auto')} direction - Text direction, either left-to-right (ltr) or right-to-left (rtl)
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* @return {Promise<void>}
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*/
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const switchDirection = async (direction) => {
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if (direction === 'auto') {
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// eslint-disable-next-line no-param-reassign
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direction = 'ltr'
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}
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let updatedLink
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Array.from(document.getElementsByTagName('link'))
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.filter((link) => link.rel === 'stylesheet')
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.forEach((link) => {
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if (link.title === direction && link.disabled) {
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link.disabled = false
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updatedLink = link
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} else if (link.title !== direction && !link.disabled) {
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link.disabled = true
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}
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})
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if (updatedLink) {
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return new Promise((resolve, reject) => {
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updatedLink.onload = () => {
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resolve()
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}
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updatedLink.onerror = () => reject(new Error(`Failed to load '${direction}' stylesheet`))
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})
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}
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return undefined
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}
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export default switchDirection
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