Remove forceNpm option for sake of simplicity (#70)

README.md

@@ -210,30 +210,6 @@ Because the configuration loader depends on this setting, its output is not
 affected by this setting. If you want to debug the configuration set
 `DEBUG_ISOLATE_CONFIG=true` before you run `isolate`
 
-### forceNpm
-
-Type: `boolean`, default: `false`
-
-By default the isolate process will generate output based on the package manager
-that you are using for your monorepo. But your deployment target might not be
-compatible with that package manager, or it might not be the best choice given
-the available tooling.
-
-Also, it should not really matter what package manager is used in de deployment
-as long as the versions match your original lockfile.
-
-By setting this option to `true` you are forcing the isolate output to use NPM.
-A package-lock file will be generated based on the contents of node_modules and
-therefore should match the versions in your original lockfile.
-
-This way you can enjoy using PNPM or Yarn for your monorepo, while your
-deployment uses NPM with modules locked to the same versions.
-
-> !! Warning: Generating an NPM lockfile currently requires moving the
-> node_modules from the root of the monorepo temporarily into the isolate
-> directory. This will not be compatible with setups that run multiple isolation
-> processes in parallel.
-
 ### buildDirName
 
 Type: `string | undefined`, default: `undefined`
@@ -341,13 +317,8 @@ When you use the `targetPackagePath` option, this setting will be ignored.
 ## Lockfiles
 
 The isolate process tries to generate an isolated / pruned lockfile for the
-package manager that you use in your monorepo. If the package manager is not
-supported (modern Yarn versions), it can still generate a matching NPM lockfile
-based on the installed versions in node_modules.
-
-In case your package manager is not supported by your deployment target you can
-also choose NPM to be used by setting the `makeNpmLockfile` to `true` in your
-configuration.
+package manager that you use in your monorepo. The strategy is different for
+each package manager, with NPM currently being the least attractive.
 
 ### NPM
 
@@ -366,13 +337,8 @@ after Arborist has finished doing its thing.
 
 ### PNPM
 
-The PNPM lockfile format is very readable (YAML) but getting it adapted to the
-isolate output was a bit of a trip.
-
-It turns out, at least up to v10, that the isolated output has to be formatted
-as a workspace itself, otherwise dependencies of internally linked packages are
-not installed by PNPM. Therefore, the output looks a bit different from other
-package managers:
+For PNPM, the isolated output will be formatted as a workspace itself, otherwise
+dependencies of internally linked packages are not installed by PNPM.
 
 - Links are preserved
 - Versions specifiers like "workspace:\*" are preserved

src/isolate.ts

@@ -191,7 +191,7 @@ export async function isolate(
     await writeManifest(isolateDir, manifest);
   }
 
-  if (packageManager.name === "pnpm" && !config.forceNpm) {
+  if (packageManager.name === "pnpm") {
     /**
      * PNPM doesn't install dependencies of packages that are linked via link:
      * or file: specifiers. It requires the directory to be configured as a

src/lib/lockfile/process-lockfile.ts

@@ -1,4 +1,3 @@
-import { useConfig } from "../config";
 import { useLogger } from "../logger";
 import { usePackageManager } from "../package-manager";
 import type { PackageManifest, PackagesRegistry } from "../types";
@@ -33,19 +32,6 @@ export async function processLockfile({
 }) {
   const log = useLogger();
 
-  const { forceNpm } = useConfig();
-
-  if (forceNpm) {
-    log.info("Forcing to use NPM for isolate output");
-
-    await generateNpmLockfile({
-      workspaceRootDir,
-      isolateDir,
-    });
-
-    return true;
-  }
-
   const { name, version } = usePackageManager();
   let usedFallbackToNpm = false;
 

src/lib/manifest/adapt-target-package-manifest.ts

@@ -21,7 +21,7 @@ export async function adaptTargetPackageManifest({
   workspaceRootDir: string;
 }) {
   const packageManager = usePackageManager();
-  const { includeDevDependencies, forceNpm, pickFromScripts, omitFromScripts } =
+  const { includeDevDependencies, pickFromScripts, omitFromScripts } =
     useConfig();
 
   /** Dev dependencies are omitted by default */
@@ -30,7 +30,7 @@ export async function adaptTargetPackageManifest({
     : omit(manifest, ["devDependencies"]);
 
   const adaptedManifest =
-    packageManager.name === "pnpm" && !forceNpm
+    packageManager.name === "pnpm"
       ? /**
          * For PNPM the output itself is a workspace so we can preserve the specifiers
          * with "workspace:*" in the output manifest, but we do want to adopt the

src/lib/manifest/helpers/adapt-internal-package-manifests.ts

@@ -1,6 +1,5 @@
 import path from "node:path";
 import { omit } from "remeda";
-import { useConfig } from "~/lib/config";
 import { usePackageManager } from "~/lib/package-manager";
 import type { PackagesRegistry } from "~/lib/types";
 import { writeManifest } from "../io";
@@ -17,7 +16,6 @@ export async function adaptInternalPackageManifests(
   isolateDir: string
 ) {
   const packageManager = usePackageManager();
-  const { forceNpm } = useConfig();
 
   await Promise.all(
     internalPackageNames.map(async (packageName) => {
@@ -27,7 +25,7 @@ export async function adaptInternalPackageManifests(
       const strippedManifest = omit(manifest, ["scripts", "devDependencies"]);
 
       const outputManifest =
-        packageManager.name === "pnpm" && !forceNpm
+        packageManager.name === "pnpm"
           ? /**
              * For PNPM the output itself is a workspace so we can preserve the specifiers
              * with "workspace:*" in the output manifest.