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Use a LRU approach for the cache of translated messages

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This commit is contained in:
Ben Gotow 2019-08-02 00:21:35 -05:00
parent 7102809fb4
commit ed72723b6d
1 changed files with 10 additions and 2 deletions
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12
app/internal_packages/translation/lib/message-header.tsx
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@ -51,9 +51,17 @@ function setPrefs(opts: { disabled: string[]; automatic: string[] }) {
export class TranslateMessageExtension extends MessageViewExtension {
static formatMessageBody = ({ message }) => {
const result = RecentlyTranslatedBodies.find(o => o.id === message.id);
if (result && result.enabled)
// retrieve from cache and push to the end to ensure the least recently viewed message is
// removed from the cache first.
const idx = RecentlyTranslatedBodies.findIndex(o => o.id === message.id);
if (idx === -1) return;
const [result] = RecentlyTranslatedBodies.splice(idx, 1);
RecentlyTranslatedBodies.push(result);
if (result.enabled) {
message.body = window.localStorage.getItem(`translated-${message.id}`);
}
};
}