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import is, { assert } from '@sindresorhus/is';
import asPromise from './as-promise/index.js';
import Request from './core/index.js';
import Options from './core/options.js';
// The `delay` package weighs 10KB (!)
const delay = async (ms) => new Promise(resolve => {
setTimeout(resolve, ms);
});
const isGotInstance = (value) => is.function_(value);
const aliases = [
'get',
'post',
'put',
'patch',
'head',
'delete',
];
const create = (defaults) => {
defaults = {
options: new Options(undefined, undefined, defaults.options),
handlers: [...defaults.handlers],
mutableDefaults: defaults.mutableDefaults,
};
Object.defineProperty(defaults, 'mutableDefaults', {
enumerable: true,
configurable: false,
writable: false,
});
// Got interface
const got = ((url, options, defaultOptions = defaults.options) => {
const request = new Request(url, options, defaultOptions);
let promise;
const lastHandler = (normalized) => {
// Note: `options` is `undefined` when `new Options(...)` fails
request.options = normalized;
request._noPipe = !normalized.isStream;
void request.flush();
if (normalized.isStream) {
return request;
}
if (!promise) {
promise = asPromise(request);
}
return promise;
};
let iteration = 0;
const iterateHandlers = (newOptions) => {
const handler = defaults.handlers[iteration++] ?? lastHandler;
const result = handler(newOptions, iterateHandlers);
if (is.promise(result) && !request.options.isStream) {
if (!promise) {
promise = asPromise(request);
}
if (result !== promise) {
const descriptors = Object.getOwnPropertyDescriptors(promise);
for (const key in descriptors) {
if (key in result) {
// eslint-disable-next-line @typescript-eslint/no-dynamic-delete
delete descriptors[key];
}
}
// eslint-disable-next-line @typescript-eslint/no-floating-promises
Object.defineProperties(result, descriptors);
result.cancel = promise.cancel;
}
}
return result;
};
return iterateHandlers(request.options);
});
got.extend = (...instancesOrOptions) => {
const options = new Options(undefined, undefined, defaults.options);
const handlers = [...defaults.handlers];
let mutableDefaults;
for (const value of instancesOrOptions) {
if (isGotInstance(value)) {
options.merge(value.defaults.options);
handlers.push(...value.defaults.handlers);
mutableDefaults = value.defaults.mutableDefaults;
}
else {
options.merge(value);
if (value.handlers) {
handlers.push(...value.handlers);
}
mutableDefaults = value.mutableDefaults;
}
}
return create({
options,
handlers,
mutableDefaults: Boolean(mutableDefaults),
});
};
// Pagination
const paginateEach = (async function* (url, options) {
let normalizedOptions = new Options(url, options, defaults.options);
normalizedOptions.resolveBodyOnly = false;
const { pagination } = normalizedOptions;
assert.function_(pagination.transform);
assert.function_(pagination.shouldContinue);
assert.function_(pagination.filter);
assert.function_(pagination.paginate);
assert.number(pagination.countLimit);
assert.number(pagination.requestLimit);
assert.number(pagination.backoff);
const allItems = [];
let { countLimit } = pagination;
let numberOfRequests = 0;
while (numberOfRequests < pagination.requestLimit) {
if (numberOfRequests !== 0) {
// eslint-disable-next-line no-await-in-loop
await delay(pagination.backoff);
}
// eslint-disable-next-line no-await-in-loop
const response = (await got(undefined, undefined, normalizedOptions));
// eslint-disable-next-line no-await-in-loop
const parsed = await pagination.transform(response);
const currentItems = [];
assert.array(parsed);
for (const item of parsed) {
if (pagination.filter({ item, currentItems, allItems })) {
if (!pagination.shouldContinue({ item, currentItems, allItems })) {
return;
}
yield item;
if (pagination.stackAllItems) {
allItems.push(item);
}
currentItems.push(item);
if (--countLimit <= 0) {
return;
}
}
}
const optionsToMerge = pagination.paginate({
response,
currentItems,
allItems,
});
if (optionsToMerge === false) {
return;
}
if (optionsToMerge === response.request.options) {
normalizedOptions = response.request.options;
}
else {
normalizedOptions.merge(optionsToMerge);
assert.any([is.urlInstance, is.undefined], optionsToMerge.url);
if (optionsToMerge.url !== undefined) {
normalizedOptions.prefixUrl = '';
normalizedOptions.url = optionsToMerge.url;
}
}
numberOfRequests++;
}
});
got.paginate = paginateEach;
got.paginate.all = (async (url, options) => {
const results = [];
for await (const item of paginateEach(url, options)) {
results.push(item);
}
return results;
});
// For those who like very descriptive names
got.paginate.each = paginateEach;
// Stream API
got.stream = ((url, options) => got(url, { ...options, isStream: true }));
// Shortcuts
for (const method of aliases) {
got[method] = ((url, options) => got(url, { ...options, method }));
got.stream[method] = ((url, options) => got(url, { ...options, method, isStream: true }));
}
if (!defaults.mutableDefaults) {
Object.freeze(defaults.handlers);
defaults.options.freeze();
}
Object.defineProperty(got, 'defaults', {
value: defaults,
writable: false,
configurable: false,
enumerable: true,
});
return got;
};
export default create;
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