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iferr
iferr.js
// Delegates to `succ` on sucecss or to `fail` on error // ex: Thing.load(123, iferr(cb, thing => ...)) const iferr = (fail, succ) => (err, ...a) => err ? fail(err) : succ(...a) // Like iferr, but also catches errors thrown from `succ` and passes to `fail` const tiferr = (fail, succ) => iferr(fail, (...a) => { try { succ(...a) } catch (err) { fail(err) } }) // Delegate to the success function on success, throws the error otherwise // ex: Thing.load(123, throwerr(thing => ...)) const throwerr = iferr.bind(null, err => { throw err }) // Prints errors when one is passed, or does nothing otherwise // ex: Thing.load(123, printerr) const printerr = iferr(err => console.error(err), () => {}) module.exports = exports = iferr exports.iferr = iferr exports.tiferr = tiferr exports.throwerr = throwerr exports.printerr = printerr
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