Replaced "new Parser()" with "parser()"

Author: mgsium

extensions/ql-vscode/src/cli.ts

@@ -3,7 +3,7 @@ import * as child_process from 'child_process';
 import * as fs from 'fs-extra';
 import * as path from 'path';
 import { chain } from 'stream-chain';
-import { Parser } from 'stream-json';
+import { parser } from 'stream-json';
 import Assembler = require('stream-json/Assembler');
 import * as sarif from 'sarif';
 import { SemVer } from 'semver';
@@ -20,7 +20,6 @@ import { assertNever } from './pure/helpers-pure';
 import { QueryMetadata, SortDirection } from './pure/interface-types';
 import { Logger, ProgressReporter } from './logging';
 import { CompilationMessage } from './pure/messages';
-import Chain = require('stream-chain');
 
 /**
  * The version of the SARIF format that we are using.
@@ -673,12 +672,11 @@ export class CodeQLCliServer implements Disposable {
 
   async interpretBqrs(metadata: QueryMetadata, resultsPath: string, interpretedResultsPath: string, sourceInfo?: SourceInfo): Promise<sarif.Log> {
     await this.runInterpretCommand(SARIF_FORMAT, metadata, resultsPath, interpretedResultsPath, sourceInfo);
-    let pipeline: Chain;
-
+    let pipeline;
     try {
       pipeline = chain([
         fs.createReadStream(interpretedResultsPath),
-        new Parser()
+        parser()
       ]);
     } catch (e) {
       throw new Error('Reading output of interpretation failed.');
@@ -688,7 +686,7 @@ export class CodeQLCliServer implements Disposable {
       const asm = Assembler.connectTo(pipeline);
       asm.on('done', (asm) => asm.current);
       // need to return asm.current in place of {}
-      return {} as sarif.Log;
+      return {} as unknown as sarif.Log;
     } catch (err) {
       throw new Error(`Parsing output of interpretation failed: ${err.stderr || err}`);
     }