fix: reduce set of dependencies (#876)

Author: JustinBeckwith

package.json

@@ -51,7 +51,6 @@
     "extend": "^3.0.2",
     "findit2": "^2.2.3",
     "gcp-metadata": "^4.0.0",
-    "lodash.pickby": "^4.6.0",
     "p-limit": "^2.2.0",
     "semver": "^7.0.0",
     "source-map": "^0.6.1",
@@ -63,8 +62,6 @@
     "@types/console-log-level": "^1.4.0",
     "@types/estree": "0.0.44",
     "@types/extend": "^3.0.0",
-    "@types/lodash.pickby": "^4.6.4",
-    "@types/mkdirp": "^1.0.0",
     "@types/mocha": "^7.0.0",
     "@types/mv": "^2.1.0",
     "@types/ncp": "^2.0.3",
@@ -73,13 +70,11 @@
     "@types/semver": "^7.0.0",
     "@types/tmp": "^0.2.0",
     "@types/uuid": "^7.0.0",
-    "codecov": "^3.0.4",
     "cpy-cli": "^3.1.0",
     "cross-env": "^7.0.0",
     "execa": "^4.0.0",
     "gts": "^2.0.0",
     "linkinator": "^2.0.0",
-    "mkdirp": "^1.0.3",
     "mocha": "^7.0.0",
     "mv": "^2.1.1",
     "ncp": "^2.0.0",

src/agent/io/scanner.ts

@@ -16,7 +16,6 @@ import * as crypto from 'crypto';
 import * as events from 'events';
 import * as fs from 'fs';
 import * as path from 'path';
-import pickBy = require('lodash.pickby');
 
 // TODO: Make this more precise.
 // eslint-disable-next-line @typescript-eslint/no-var-requires
@@ -84,7 +83,13 @@ class ScanResultsImpl implements ScanResults {
    *  should be included in the returned results.
    */
   selectStats(regex: RegExp): ScanStats | {} {
-    return pickBy(this.stats, (_, key) => regex.test(key));
+    const obj = {} as {[index: string]: {} | undefined};
+    Object.keys(this.stats).forEach(key => {
+      if (regex.test(key)) {
+        obj[key] = this.stats[key];
+      }
+    });
+    return obj;
   }
 
   /**