Adding automatic calculation of package-lock.json path

dependency-tree.ts

@@ -1,4 +1,5 @@
 import yargs from "yargs/yargs";
+import path from "path";
 
 import { hideBin } from "yargs/helpers";
 
@@ -11,12 +12,6 @@ const args = yargs(hideBin(process.argv))
         describe: "The full or relative path to the package.json file",
         require: true
     })
-    .option("packageLock", {
-        alias: "package-lock",
-        type: "string",
-        describe: "The full or relative path to the package-lock.json file",
-        require: true
-    })
     .option("format", {
         choices: formats,
         demandOption: true,
@@ -97,7 +92,7 @@ const displayDepTreeAsCsv = (tree: PackageLockTree, depType: "dependency" | "dev
 
 Promise.all<Package, PackageLock>([
     import(args.package),
-    import(args.packageLock)
+    import(`${path.dirname(args.package)}/package-lock.json`)
 ])
     .then(([json, jsonLock]) => {
         const dependencyTree = Object.keys(json.dependencies)