Refactor into plugin loader and do not enforce (#20112)

packages/opencode/src/plugin/loader.ts

@@ -0,0 +1,135 @@
+import { Config } from "@/config/config"
+import { Installation } from "@/installation"
+import {
+  checkPluginCompatibility,
+  createPluginEntry,
+  isDeprecatedPlugin,
+  resolvePluginTarget,
+  type PluginKind,
+  type PluginPackage,
+  type PluginSource,
+} from "./shared"
+
+export namespace PluginLoader {
+  export type Plan = {
+    item: Config.PluginSpec
+    spec: string
+    options: Config.PluginOptions | undefined
+    deprecated: boolean
+  }
+
+  export type Resolved = Plan & {
+    source: PluginSource
+    target: string
+    entry: string
+    pkg?: PluginPackage
+  }
+
+  export type Loaded = Resolved & {
+    mod: Record<string, unknown>
+  }
+
+  export function plan(item: Config.PluginSpec): Plan {
+    const spec = Config.pluginSpecifier(item)
+    return {
+      item,
+      spec,
+      options: Config.pluginOptions(item),
+      deprecated: isDeprecatedPlugin(spec),
+    }
+  }
+
+  export async function resolve(
+    plan: Plan,
+    kind: PluginKind,
+  ): Promise<
+    { ok: true; value: Resolved } | { ok: false; stage: "install" | "entry" | "compatibility"; error: unknown }
+  > {
+    let target = ""
+    try {
+      target = await resolvePluginTarget(plan.spec)
+    } catch (error) {
+      return {
+        ok: false,
+        stage: "install",
+        error,
+      }
+    }
+    if (!target) {
+      return {
+        ok: false,
+        stage: "install",
+        error: new Error(`Plugin ${plan.spec} target is empty`),
+      }
+    }
+
+    let base
+    try {
+      base = await createPluginEntry(plan.spec, target, kind)
+    } catch (error) {
+      return {
+        ok: false,
+        stage: "entry",
+        error,
+      }
+    }
+
+    if (!base.entry) {
+      return {
+        ok: false,
+        stage: "entry",
+        error: new Error(`Plugin ${plan.spec} entry is empty`),
+      }
+    }
+
+    if (base.source === "npm") {
+      try {
+        await checkPluginCompatibility(base.target, Installation.VERSION, base.pkg)
+      } catch (error) {
+        return {
+          ok: false,
+          stage: "compatibility",
+          error,
+        }
+      }
+    }
+
+    return {
+      ok: true,
+      value: {
+        ...plan,
+        source: base.source,
+        target: base.target,
+        entry: base.entry,
+        pkg: base.pkg,
+      },
+    }
+  }
+
+  export async function load(row: Resolved): Promise<{ ok: true; value: Loaded } | { ok: false; error: unknown }> {
+    let mod
+    try {
+      mod = await import(row.entry)
+    } catch (error) {
+      return {
+        ok: false,
+        error,
+      }
+    }
+
+    if (!mod) {
+      return {
+        ok: false,
+        error: new Error(`Plugin ${row.spec} module is empty`),
+      }
+    }
+
+    return {
+      ok: true,
+      value: {
+        ...row,
+        mod,
+      },
+    }
+  }
+}