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async-compat
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Compatibility functions for writing libraries that support synchronous, callback and promise signatures.
It handles both the call signature differences between callback and promises APIs (eg. missing the last callback parameter) by converting them to callbacks. It also resolves returned parameters when promises are returned.
var compat = require('async-compat');
var assert = require(assert');
/////////////////
// synchronous
/////////////////
function fn(value1) {
assert.equal(value1, 1);
return 4;
}
compat.asyncFunction(fn, false /* no callbacks */, 1, function (err, result) {
assert.ok(!err);
assert.equal(result, 4);
});
function errorFn(value1) {
assert.equal(value1, 1);
return new Error('Failed');
}
compat.asyncFunction(errorFn, false /* no callbacks */, 1, function (err, result) {
assert.ok(!!err);
});
/////////////////
// callback
/////////////////
function callbackFn(value1, callback) {
assert.equal(value1, 1);
callback(null, 4);
}
compat.asyncFunction(callbackFn, true /* no callbacks */, 1, function (err, result) {
assert.ok(!err);
assert.equal(result, 4);
});
function errorCallbackFn(value1, callback) {
assert.equal(value1, 1);
callback(new Error('Failed'));
}
compat.asyncFunction(errorCallbackFn, true /* no callbacks */, 1, function (err, result) {
assert.ok(!!err);
});
/////////////////
// promise
/////////////////
function promiseFn(value1) {
assert.equal(value1, 1);
return Promise.resolve(4);
}
compat.asyncFunction(promiseFn, false /* no callbacks */, 1, function (err, result) {
assert.ok(!err);
assert.equal(result, 4);
});
function errorPromiseFn(value1) {
assert.equal(value1, 1);
return Promise.reject(new Error('Failed'));
}
compat.errorPromiseFn(promiseFn, false /* no callbacks */, 1, function (err, result) {
assert.ok(!!err);
});
FAQs
Compatibility functions for writing libraries that support synchronous, callback and promise signatures
The npm package async-compat receives a total of 334 weekly downloads. As such, async-compat popularity was classified as not popular.
We found that async-compat demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 1 open source maintainer collaborating on the project.
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