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21 lines
344 B
21 lines
344 B
module.exports = thunkyp
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function thunkyp (fn) {
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let running = null
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return ready
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function ready () {
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if (running) return running
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const p = fn()
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if (!(p instanceof Promise)) running = Promise.resolve(p)
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else running = p
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running.catch(onerror)
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return running
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}
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function onerror () {
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running = null
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}
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}
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