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Code Issues Releases Wiki Activity

Optimize code 

* optimize loops to reduce execution time
* inline functions to reduce output file size
* flatten PublishPreset structure
* remove extra checks
This commit is contained in:
Nikita Karamov 2020-07-30 12:40:00 +02:00
parent 24561c6a45
commit 6eae37e54f
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1 changed files with 63 additions and 42 deletions
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105
src/shareon.ts
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@ -1,11 +1,9 @@
interface PublishPreset {
url: string,
title: string,
extra: {
media: string,
text: string,
via: string,
}
media: string,
text: string,
via: string,
}
type UrlBuilder = (data: PublishPreset) => string;
@ -14,57 +12,80 @@ const NETWORKS: { [name: string]: UrlBuilder } = {
facebook: (d) => `https://www.facebook.com/sharer/sharer.php?u=${d.url}`,
linkedin: (d) => `https://www.linkedin.com/shareArticle?mini=true&url=${d.url}&title=${d.title}`,
messenger: (d) => `https://www.facebook.com/dialog/send?app_id=3619024578167617&link=${d.url}&redirect_uri=${d.url}`,
odnoklassniki: (d) => `https://connect.ok.ru/offer?url=${d.url}&title=${d.title}${d.extra.media ? `&imageUrl=${d.extra.media}` : ''}`,
pinterest: (d) => `https://pinterest.com/pin/create/button/?url=${d.url}&description=${d.title}${d.extra.media ? `&media=${d.extra.media}` : ''}`,
odnoklassniki: (d) => `https://connect.ok.ru/offer?url=${d.url}&title=${d.title}${d.media ? `&imageUrl=${d.media}` : ''}`,
pinterest: (d) => `https://pinterest.com/pin/create/button/?url=${d.url}&description=${d.title}${d.media ? `&media=${d.media}` : ''}`,
pocket: (d) => `https://getpocket.com/edit.php?url=${d.url}`,
reddit: (d) => `https://www.reddit.com/submit?title=${d.title}&url=${d.url}`,
telegram: (d) => `https://telegram.me/share/url?url=${d.url}${d.extra.text ? `&text=${d.extra.text}` : ''}`,
twitter: (d) => `https://twitter.com/intent/tweet?url=${d.url}&text=${d.title}${d.extra.via ? `&via=${d.extra.via}` : ''}`,
viber: (d) => `viber://forward?text=${d.title}%0D%0A${d.url}${d.extra.text ? `%0D%0A%0D%0A${d.extra.text}` : ''}`,
vkontakte: (d) => `https://vk.com/share.php?url=${d.url}&title=${d.title}${d.extra.media ? `&image=${d.extra.media}` : ''}`,
whatsapp: (d) => `whatsapp://send?text=${d.title}%0D%0A${d.url}${d.extra.text ? `%0D%0A%0D%0A${d.extra.text}` : ''}`,
telegram: (d) => `https://telegram.me/share/url?url=${d.url}${d.text ? `&text=${d.text}` : ''}`,
twitter: (d) => `https://twitter.com/intent/tweet?url=${d.url}&text=${d.title}${d.via ? `&via=${d.via}` : ''}`,
viber: (d) => `viber://forward?text=${d.title}%0D%0A${d.url}${d.text ? `%0D%0A%0D%0A${d.text}` : ''}`,
vkontakte: (d) => `https://vk.com/share.php?url=${d.url}&title=${d.title}${d.media ? `&image=${d.media}` : ''}`,
whatsapp: (d) => `whatsapp://send?text=${d.title}%0D%0A${d.url}${d.text ? `%0D%0A%0D%0A${d.text}` : ''}`,
};
function initShareonChild(child: HTMLElement, preset: PublishPreset) {
if (child) {
child.classList.forEach((cls) => {
if (Object.prototype.hasOwnProperty.call(NETWORKS, cls)) {
const url = NETWORKS[cls](preset);
if (child.tagName.toLowerCase() === 'a') {
child.setAttribute('href', url);
child.setAttribute('rel', 'noopener noreferrer');
child.setAttribute('target', '_blank');
} else {
child.addEventListener('click', () => { window.open(url, '_blank', 'noopener,noreferrer').opener = null; });
}
}
});
}
}
const initializeShareon = () : void => {
const shareonContainers = document.getElementsByClassName('shareon');
// iterate over <div class="shareon">
for (let i = 0; i < shareonContainers.length; i += 1) {
const container = shareonContainers[i] as HTMLElement;
// iterate over children of <div class="shareon">
for (let j = 0; j < container.children.length; j += 1) {
const child = container.children[j] as HTMLElement;
const preset: PublishPreset = {
url: encodeURIComponent(child.dataset.url || container.dataset.url || window.location.href),
title: encodeURIComponent(child.dataset.title || container.dataset.title || document.title || ''),
extra: {
media: encodeURIComponent(child.dataset.media || container.dataset.media || ''),
text: encodeURIComponent(child.dataset.text || container.dataset.text || ''),
via: encodeURIComponent(child.dataset.via || container.dataset.via || ''),
},
};
if (child) {
const classListLength = child.classList.length;
initShareonChild(
child as HTMLElement,
preset,
);
// iterate over classes of the child element
for (let k = 0; k < classListLength; k += 1) {
const cls = child.classList.item(k);
// if it's one of the networks
if (Object.prototype.hasOwnProperty.call(NETWORKS, cls)) {
const preset = {
url: encodeURIComponent(
child.dataset.url
|| container.dataset.url
|| window.location.href,
),
title: encodeURIComponent(
child.dataset.title
|| container.dataset.title
|| document.title,
),
media: encodeURIComponent(
child.dataset.media
|| container.dataset.media
|| '',
),
text: encodeURIComponent(
child.dataset.text
|| container.dataset.text
|| '',
),
via: encodeURIComponent(
child.dataset.via
|| container.dataset.via
|| '',
),
};
const url = NETWORKS[cls](preset);
if (child.tagName.toLowerCase() === 'a') {
child.setAttribute('href', url);
child.setAttribute('rel', 'noopener noreferrer');
child.setAttribute('target', '_blank');
} else {
child.addEventListener('click', () => {
window.open(url, '_blank', 'noopener,noreferrer').opener = null;
});
}
break; // once a network is detected we don't want to check further
}
}
}
}
}
};