3295: Refactoring fetchArtifactReleaseInfo() r=matklad a=Veetaha

https://github.com/typescript-eslint/typescript-eslint/blob/master/packages/eslint-plugin/docs/rules/no-unnecessary-type-assertion.md

I fact this rule doesn't work when you put an unnecessary non-null assertion in an expression (as we had `(awat f())!`, but it is useful in other cases...

Closes #3295, i guess...

Co-authored-by: Veetaha <gerzoh1@gmail.com>
This commit is contained in:
bors[bot] 2020-02-25 10:09:14 +00:00 committed by GitHub
commit c4c15363fb
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3 changed files with 42 additions and 21 deletions

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@ -32,6 +32,7 @@ module.exports = {
"@typescript-eslint/semi": [
"error",
"always"
]
],
"@typescript-eslint/no-unnecessary-type-assertion": "error"
}
};

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@ -4,41 +4,61 @@ import { log } from "../util";
const GITHUB_API_ENDPOINT_URL = "https://api.github.com";
/**
* Fetches the release with `releaseTag` (or just latest release when not specified)
* from GitHub `repo` and returns metadata about `artifactFileName` shipped with
* this release or `null` if no such artifact was published.
* Fetches the release with `releaseTag` from GitHub `repo` and
* returns metadata about `artifactFileName` shipped with
* this release.
*
* @throws Error upon network failure or if no such repository, release, or artifact exists.
*/
export async function fetchArtifactReleaseInfo(
repo: GithubRepo, artifactFileName: string, releaseTag?: string
): Promise<null | ArtifactReleaseInfo> {
repo: GithubRepo,
artifactFileName: string,
releaseTag: string
): Promise<ArtifactReleaseInfo> {
const repoOwner = encodeURIComponent(repo.owner);
const repoName = encodeURIComponent(repo.name);
const apiEndpointPath = releaseTag
? `/repos/${repoOwner}/${repoName}/releases/tags/${releaseTag}`
: `/repos/${repoOwner}/${repoName}/releases/latest`;
const apiEndpointPath = `/repos/${repoOwner}/${repoName}/releases/tags/${releaseTag}`;
const requestUrl = GITHUB_API_ENDPOINT_URL + apiEndpointPath;
// We skip runtime type checks for simplicity (here we cast from `any` to `GithubRelease`)
log.debug("Issuing request for released artifacts metadata to", requestUrl);
// FIXME: handle non-ok response
const response: GithubRelease = await fetch(requestUrl, {
headers: { Accept: "application/vnd.github.v3+json" }
})
.then(res => res.json());
const response = await fetch(requestUrl, { headers: { Accept: "application/vnd.github.v3+json" } });
const artifact = response.assets.find(artifact => artifact.name === artifactFileName);
if (!response.ok) {
log.error("Error fetching artifact release info", {
requestUrl,
releaseTag,
artifactFileName,
response: {
headers: response.headers,
status: response.status,
body: await response.text(),
}
});
if (!artifact) return null;
throw new Error(
`Got response ${response.status} when trying to fetch ` +
`"${artifactFileName}" artifact release info for ${releaseTag} release`
);
}
// We skip runtime type checks for simplicity (here we cast from `any` to `GithubRelease`)
const release: GithubRelease = await response.json();
const artifact = release.assets.find(artifact => artifact.name === artifactFileName);
if (!artifact) {
throw new Error(
`Artifact ${artifactFileName} was not found in ${release.name} release!`
);
}
return {
releaseName: response.name,
releaseName: release.name,
downloadUrl: artifact.browser_download_url
};

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@ -63,7 +63,7 @@ export async function ensureServerBinary(source: null | BinarySource): Promise<n
async function downloadServer(source: BinarySource.GithubRelease): Promise<boolean> {
try {
const releaseInfo = (await fetchArtifactReleaseInfo(source.repo, source.file, source.version))!;
const releaseInfo = await fetchArtifactReleaseInfo(source.repo, source.file, source.version);
await downloadArtifact(releaseInfo, source.file, source.dir, "language server");
await setServerVersion(source.storage, releaseInfo.releaseName);