25 lines
803 B
CoffeeScript
25 lines
803 B
CoffeeScript
# Delegates to `succ` on sucecss or to `fail` on error
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# ex: Thing.load 123, iferr cb, (thing) -> ...
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iferr = (fail, succ) -> (err, a...) ->
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if err? then fail err
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else succ? a...
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# Like iferr, but also catches errors thrown from `succ` and passes to `fail`
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tiferr = (fail, succ) -> iferr fail, (a...) ->
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try succ a...
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catch err then fail err
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# Delegate to the success function on success, or throw the error otherwise
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# ex: Thing.load 123, throwerr (thing) -> ...
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throwerr = iferr.bind null, (err) -> throw err
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# Prints errors when one is passed, or does nothing otherwise
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# ex: thing.save printerr
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printerr = iferr (err) -> console.error err.stack or err
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module.exports = exports = iferr
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exports.iferr = iferr
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exports.tiferr = tiferr
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exports.throwerr = throwerr
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exports.printerr = printerr
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