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chore(kit): remove unused internals (#22555)
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@ -1,42 +0,0 @@
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export function sequence<T, R> (
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tasks: T[],
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fn: (task: T) => R
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) {
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return tasks.reduce(
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(promise, task): any => promise.then(() => fn(task)),
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Promise.resolve()
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)
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}
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export function parallel<T, R> (
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tasks: T[],
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fn: (task: T) => R
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) {
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return Promise.all(tasks.map(fn))
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}
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export function chainFn<Fn> (base: Fn, fn: Fn): Fn {
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if (typeof fn !== 'function') {
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return base
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}
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return function (this: any, ...args: any[]) {
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if (typeof base !== 'function') {
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return fn.apply(this, args)
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}
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let baseResult = base.apply(this, args)
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// Allow function to mutate the first argument instead of returning the result
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if (baseResult === undefined) {
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[baseResult] = args
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}
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const fnResult = fn.call(
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this,
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baseResult,
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...Array.prototype.slice.call(args, 1)
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)
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// Return mutated argument if no result was returned
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if (fnResult === undefined) {
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return baseResult
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}
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return fnResult
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} as unknown as Fn
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}
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