Merge #3372

3372: vscode: migrate to more type-safe assert impl r=matklad a=Veetaha

https://www.typescriptlang.org/docs/handbook/release-notes/typescript-3-7.html#assertion-functions

Co-authored-by: Veetaha <[email protected]>

3 files changed, 6 insertions, 9 deletions

diff --git a/editors/code/src/installation/download_artifact.ts b/editors/code/src/installation/download_artifact.ts
index 8ed99bf0a..97e4d67c2 100644
--- a/editors/code/src/installation/download_artifact.ts
+++ b/editors/code/src/installation/download_artifact.ts
@@ -1,10 +1,10 @@
 import * as vscode from "vscode";
 import * as path from "path";
 import { promises as fs } from "fs";
-import { strict as assert } from "assert";
 
 import { ArtifactReleaseInfo } from "./interfaces";
 import { downloadFile } from "./download_file";
+import { assert } from "../util";
 
 /**
  * Downloads artifact from given `downloadUrl`.
@@ -19,11 +19,10 @@ export async function downloadArtifact(
     installationDir: string,
     displayName: string,
 ) {
-    await fs.mkdir(installationDir).catch(err => assert.strictEqual(
-        err?.code,
-        "EEXIST",
+    await fs.mkdir(installationDir).catch(err => assert(
+        err?.code === "EEXIST",
         `Couldn't create directory "${installationDir}" to download ` +
-        `${artifactFileName} artifact: ${err.message}`
+        `${artifactFileName} artifact: ${err?.message}`
     ));
 
     const installationPath = path.join(installationDir, artifactFileName);
diff --git a/editors/code/src/installation/download_file.ts b/editors/code/src/installation/download_file.ts
index 319cb995c..ee8949d61 100644
--- a/editors/code/src/installation/download_file.ts
+++ b/editors/code/src/installation/download_file.ts
@@ -2,8 +2,7 @@ import fetch from "node-fetch";
 import * as fs from "fs";
 import * as stream from "stream";
 import * as util from "util";
-import { strict as assert } from "assert";
-import { log } from "../util";
+import { log, assert } from "../util";
 
 const pipeline = util.promisify(stream.pipeline);
 
diff --git a/editors/code/src/installation/server.ts b/editors/code/src/installation/server.ts
index cb5e56844..6a6cf4f8c 100644
--- a/editors/code/src/installation/server.ts
+++ b/editors/code/src/installation/server.ts
@@ -1,13 +1,12 @@
 import * as vscode from "vscode";
 import * as path from "path";
-import { strict as assert } from "assert";
 import { promises as dns } from "dns";
 import { spawnSync } from "child_process";
 
 import { BinarySource } from "./interfaces";
 import { fetchArtifactReleaseInfo } from "./fetch_artifact_release_info";
 import { downloadArtifact } from "./download_artifact";
-import { log } from "../util";
+import { log, assert } from "../util";
 
 export async function ensureServerBinary(source: null | BinarySource): Promise<null | string> {
     if (!source) {