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index.ts
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index.ts
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import is from '@sindresorhus/is';
import { logger } from '../../../logger';
import { ExternalHostError } from '../../../types/errors/external-host-error';
import { GithubHttp } from '../../../util/http/github';
import { fromBase64 } from '../../../util/string';
import type { Preset, PresetConfig } from '../types';
import { PRESET_DEP_NOT_FOUND, fetchPreset, parsePreset } from '../util';
export const Endpoint = 'https://api.github.com/';
const http = new GithubHttp();
export async function fetchJSONFile(
repo: string,
fileName: string,
endpoint: string,
tag?: string | undefined,
): Promise<Preset> {
let ref = '';
if (is.nonEmptyString(tag)) {
ref = `?ref=${tag}`;
}
const url = `${endpoint}repos/${repo}/contents/${fileName}${ref}`;
logger.trace({ url }, `Preset URL`);
let res: { body: { content: string } };
try {
res = await http.getJson(url);
} catch (err) {
// istanbul ignore if: not testable with nock
if (err instanceof ExternalHostError) {
throw err;
}
logger.debug(`Preset file ${fileName} not found in ${repo}`);
throw new Error(PRESET_DEP_NOT_FOUND);
}
return parsePreset(fromBase64(res.body.content), fileName);
}
export function getPresetFromEndpoint(
repo: string,
filePreset: string,
presetPath?: string,
endpoint = Endpoint,
tag?: string | undefined,
): Promise<Preset | undefined> {
return fetchPreset({
repo,
filePreset,
presetPath,
endpoint,
tag,
fetch: fetchJSONFile,
});
}
export function getPreset({
repo,
presetName = 'default',
presetPath,
tag,
}: PresetConfig): Promise<Preset | undefined> {
return getPresetFromEndpoint(repo, presetName, presetPath, Endpoint, tag);
}