You can think of a treaty as a Promise with one key difference: you can resolve or reject a treaty with multiple arguments.
const treaty = require('treaty');
let test = treaty((resolve, reject) => {
let message = 'this was fun';
doSomethingAsync((error, data) => {
if (error) {
reject(error, message);
} else {
resolve(data, message);
}
});
});
// Arguments get passed here:
test.then((data, message) => {
console.log(message);
doSomethingWith(data);
});
test.catch((error, message) => {
console.error(message);
doSomethingElseWith(error);
});And of course, you can chain it all together if that's your style:
require('treaty')((resolve, reject) => {
let message = 'this was fun';
doSomethingAsync((error, data) => {
if (error) {
reject(error);
} else {
resolve(data, message);
}
});
}).then((data, message) => {
console.log(message);
doSomethingWith(data);
}).catch((error, message) => {
console.error(message);
doSomethingElseWith(error);
});
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