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October 19, 2017 17:45
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"use strict"; | |
// https://github.com/gcanti/fp-ts/blob/eec336fada51bf34f7e68592fe1dc348ca5ef873/src/function.ts#L127 | |
const pipe = (...fns) => (seed) => fns.reduce((val, fn) => fn(val), seed); | |
const isNotUndefined = (maybeT) => maybeT !== undefined; | |
const mapMaybe = (f, maybeT) => isNotUndefined(maybeT) ? f(maybeT) : maybeT; | |
const normalizeMaybe = (nullMaybe) => nullMaybe === null ? undefined : nullMaybe; | |
const forEachMaybe = (f, maybeT) => { | |
if (isNotUndefined(maybeT)) | |
f(maybeT); | |
}; | |
const getOrElseMaybe = (fallback, maybeT) => isNotUndefined(maybeT) ? maybeT : fallback(); | |
// End lib | |
const go = () => { | |
const maybeTimeline = normalizeMaybe(document.querySelector('[aria-label="Timeline: Your Home Timeline"]')); | |
const maybeTweets = mapMaybe(timeline => Array.from(timeline.querySelectorAll('[role="article"]')), maybeTimeline); | |
const checkIsTweetLiked = pipe((el) => el.querySelector('a'), normalizeMaybe, maybe => mapMaybe(el => el.textContent, maybe), maybe => mapMaybe(x => normalizeMaybe(x), maybe), maybe => mapMaybe(textContent => / liked$/.test(textContent), maybe), maybe => getOrElseMaybe(() => false, maybe)); | |
const hide = (el) => { | |
el.style.visibility = 'hidden'; | |
}; | |
forEachMaybe(tweets => tweets.filter(checkIsTweetLiked).forEach(hide), maybeTweets); | |
}; | |
go(); | |
window.addEventListener('scroll', go); |
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// https://github.com/gcanti/fp-ts/blob/eec336fada51bf34f7e68592fe1dc348ca5ef873/src/function.ts#L127 | |
const pipe: { | |
<A, B, C>(ab: (a: A) => B, bc: (b: B) => C): (a: A) => C; | |
<A, B, C, D>(ab: (a: A) => B, bc: (b: B) => C, cd: (c: C) => D): ( | |
a: A, | |
) => D; | |
<A, B, C, D, E>( | |
ab: (a: A) => B, | |
bc: (b: B) => C, | |
cd: (c: C) => D, | |
de: (d: D) => E, | |
): (a: A) => E; | |
<A, B, C, D, E, F>( | |
ab: (a: A) => B, | |
bc: (b: B) => C, | |
cd: (c: C) => D, | |
de: (d: D) => E, | |
ef: (e: E) => F, | |
): (a: A) => F; | |
<A, B, C, D, E, F, G>( | |
ab: (a: A) => B, | |
bc: (b: B) => C, | |
cd: (c: C) => D, | |
de: (d: D) => E, | |
ef: (e: E) => F, | |
fg: (f: F) => G, | |
): (a: A) => G; | |
} = (...fns: Function[]) => (seed: any) => | |
fns.reduce((val, fn) => fn(val), seed); | |
// https://github.com/OliverJAsh/simple-maybe/blob/0aaaa0b931d44be7510f07cc5d4221de0e6befae/src/index.ts | |
type Maybe<T> = undefined | T; | |
const isNotUndefined = <T>(maybeT: Maybe<T>): maybeT is T => | |
maybeT !== undefined; | |
const mapMaybe = <T, B>(f: (t: T) => B, maybeT: Maybe<T>): Maybe<B> => | |
isNotUndefined(maybeT) ? f(maybeT) : maybeT; | |
const normalizeMaybe = <T>(nullMaybe: T | null): Maybe<T> => | |
nullMaybe === null ? undefined : nullMaybe; | |
const forEachMaybe = <T>(f: (t: T) => void, maybeT: Maybe<T>): void => { | |
if (isNotUndefined(maybeT)) f(maybeT); | |
}; | |
const getOrElseMaybe = <T>(fallback: () => T, maybeT: Maybe<T>): T => | |
isNotUndefined(maybeT) ? maybeT : fallback(); | |
// End lib | |
const go = () => { | |
const maybeTimeline = normalizeMaybe( | |
document.querySelector('[aria-label="Timeline: Your Home Timeline"]'), | |
); | |
const maybeTweets = mapMaybe( | |
timeline => | |
Array.from( | |
timeline.querySelectorAll<HTMLElement>('[role="article"]'), | |
), | |
maybeTimeline, | |
); | |
const checkIsTweetLiked = pipe( | |
(el: HTMLElement) => el.querySelector('a'), | |
normalizeMaybe, | |
maybe => mapMaybe(el => el.textContent, maybe), | |
maybe => mapMaybe(x => normalizeMaybe(x), maybe), | |
maybe => mapMaybe(textContent => / liked$/.test(textContent), maybe), | |
maybe => getOrElseMaybe(() => false, maybe), | |
); | |
const hide = (el: HTMLElement) => { | |
el.style.visibility = 'hidden'; | |
}; | |
forEachMaybe( | |
tweets => tweets.filter(checkIsTweetLiked).forEach(hide), | |
maybeTweets, | |
); | |
}; | |
go(); | |
window.addEventListener('scroll', go); |
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can you edit this to hide tweets written with specific language ?