fetch-retry-ts
Version:
Adds retry functionality to fetch()
64 lines (63 loc) • 2.73 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.fetchBuilder = void 0;
function sanitize(params, defaults) {
const result = Object.assign(Object.assign({}, defaults), params);
if (typeof result.retries === 'undefined') {
result.retries = defaults.retries;
}
if (typeof result.retryDelay === 'undefined') {
result.retryDelay = defaults.retryDelay;
}
if (typeof result.retryOn === 'undefined') {
result.retryOn = defaults.retryOn;
}
return result;
}
// eslint-disable-next-line @typescript-eslint/no-explicit-any
function fetchBuilder(fetchFunc, params = {}) {
const defaults = sanitize(params, { retries: 3, retryDelay: 500, retryOn: [419, 503, 504] });
return function (input, init) {
const frp = sanitize({
retries: init === null || init === void 0 ? void 0 : init.retries,
retryDelay: init === null || init === void 0 ? void 0 : init.retryDelay,
retryOn: init === null || init === void 0 ? void 0 : init.retryOn,
}, defaults);
const retryDelayFn = typeof frp.retryDelay === 'function' ? frp.retryDelay : () => frp.retryDelay;
const retryOnFn = typeof frp.retryOn === 'function'
? frp.retryOn
: (attempt, retries, error, response) => (!!error || !response || frp.retryOn.indexOf(response.status) !== -1) &&
attempt < retries;
return new Promise(function (resolve, reject) {
const extendedFetch = function (attempt) {
fetchFunc(input, init)
.then(function (response) {
if (retryOnFn(attempt, frp.retries, null, response)) {
// eslint-disable-next-line @typescript-eslint/no-use-before-define
retry(attempt, null, response);
}
else {
resolve(response);
}
})
.catch(function (error) {
if (retryOnFn(attempt, frp.retries, error, null)) {
// eslint-disable-next-line @typescript-eslint/no-use-before-define
retry(attempt, error, null);
}
else {
reject(error);
}
});
};
function retry(attempt, error, response) {
setTimeout(function () {
extendedFetch(++attempt);
}, retryDelayFn(attempt, error, response));
}
extendedFetch(0);
});
};
}
exports.fetchBuilder = fetchBuilder;
exports.default = fetchBuilder;