| 1 | // Delegates to `succ` on sucecss or to `fail` on error
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| 2 | // ex: Thing.load(123, iferr(cb, thing => ...))
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| 3 | const iferr = (fail, succ) => (err, ...a) => err ? fail(err) : succ(...a)
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| 4 |
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| 5 | // Like iferr, but also catches errors thrown from `succ` and passes to `fail`
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| 6 | const tiferr = (fail, succ) => iferr(fail, (...a) => {
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| 7 | try { succ(...a) }
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| 8 | catch (err) { fail(err) }
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| 9 | })
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| 10 |
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| 11 | // Delegate to the success function on success, throws the error otherwise
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| 12 | // ex: Thing.load(123, throwerr(thing => ...))
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| 13 | const throwerr = iferr.bind(null, err => { throw err })
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| 14 |
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| 15 | // Prints errors when one is passed, or does nothing otherwise
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| 16 | // ex: Thing.load(123, printerr)
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| 17 | const printerr = iferr(err => console.error(err), () => {})
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| 18 |
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| 19 | module.exports = exports = iferr
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| 20 | exports.iferr = iferr
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| 21 | exports.tiferr = tiferr
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| 22 | exports.throwerr = throwerr
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| 23 | exports.printerr = printerr
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