p-allay v0.1.0

p-allay

Allay expected promise rejections: Resolve with your failure value instead.

API

This module exports an object that holds these methods:

.ifPropDef(key, pr)

Without pr missing or false-y, returns a function allayIfPropDef(err) that will:

• Lookup err[key], and if it's not undefined, return it.
• Otherwise, throw something:
  • If err is an object, throw that.
  • If err is a non-empty string, throw a new Error(err).
  • If neither, throw a TypeError that complains about err.

If pr is true-y, instead return the result of calling pr.then(null, allayIfPropDef).

.byCode(dict, pr)

Returns a function allayByCode(err) that will:

• Try to look up an err.code-named own property in dictionary object dict. If found, and its value is not undefined, return that value.
• Otherwise, throw as described for .ifPropDef.

pr works like with .ifPropDef.

.eNoEnt(pr)

Shorthand for .byCode({ ENOENT: false }, pr).

.eIsDir(pr)

Shorthand for .byCode({ EISDIR: false }, pr).

Usage

see test/usage.mjs.

Known issues

• Needs more/better tests and docs.

License

ISC