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Last change
on this file since e29cc2e was 6a3a178, checked in by Ema <ema_spirova@…>, 3 years ago |
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initial commit
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-
Property mode
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100644
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File size:
344 bytes
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| 1 | module.exports = thunkyp
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| 2 |
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| 3 | function thunkyp (fn) {
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| 4 | let running = null
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| 5 |
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| 6 | return ready
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| 7 |
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| 8 | function ready () {
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| 9 | if (running) return running
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| 10 | const p = fn()
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| 11 | if (!(p instanceof Promise)) running = Promise.resolve(p)
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| 12 | else running = p
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| 13 | running.catch(onerror)
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| 14 | return running
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| 15 | }
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| 16 |
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| 17 | function onerror () {
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| 18 | running = null
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| 19 | }
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| 20 | }
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