biofriction-wp-theme/node_modules/bach/lib/helpers.js

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2021-10-26 14:18:09 +02:00
'use strict';
var assert = require('assert');
var filter = require('arr-filter');
var map = require('arr-map');
var flatten = require('arr-flatten');
var forEach = require('array-each');
function noop() {}
function getExtensions(lastArg) {
if (typeof lastArg !== 'function') {
return lastArg;
}
}
function filterSuccess(elem) {
return elem.state === 'success';
}
function filterError(elem) {
return elem.state === 'error';
}
function buildOnSettled(done) {
if (typeof done !== 'function') {
done = noop;
}
function onSettled(error, result) {
if (error) {
return done(error, null);
}
var settledErrors = filter(result, filterError);
var settledResults = filter(result, filterSuccess);
var errors = null;
if (settledErrors.length) {
errors = map(settledErrors, 'value');
}
var results = null;
if (settledResults.length) {
results = map(settledResults, 'value');
}
done(errors, results);
}
return onSettled;
}
function verifyArguments(args) {
args = flatten(args);
var lastIdx = args.length - 1;
assert.ok(args.length, 'A set of functions to combine is required');
forEach(args, function(arg, argIdx) {
var isFunction = typeof arg === 'function';
if (isFunction) {
return;
}
if (argIdx === lastIdx) {
// Last arg can be an object of extension points
return;
}
var msg = 'Only functions can be combined, got ' + typeof arg +
' for argument ' + argIdx;
assert.ok(isFunction, msg);
});
return args;
}
module.exports = {
getExtensions: getExtensions,
onSettled: buildOnSettled,
verifyArguments: verifyArguments,
};