refactor: unwrap PluginLoader namespace + self-reexport

packages/opencode/src/plugin/loader.ts

@@ -11,164 +11,164 @@ import {
 import { ConfigPlugin } from "@/config/plugin"
 import { InstallationVersion } from "@/installation/version"
 
-export namespace PluginLoader {
-  export type Plan = {
-    spec: string
-    options: ConfigPlugin.Options | undefined
-    deprecated: boolean
-  }
-  export type Resolved = Plan & {
-    source: PluginSource
-    target: string
-    entry: string
-    pkg?: PluginPackage
-  }
-  export type Missing = Plan & {
-    source: PluginSource
-    target: string
-    pkg?: PluginPackage
-    message: string
-  }
-  export type Loaded = Resolved & {
-    mod: Record<string, unknown>
-  }
+export type Plan = {
+  spec: string
+  options: ConfigPlugin.Options | undefined
+  deprecated: boolean
+}
+export type Resolved = Plan & {
+  source: PluginSource
+  target: string
+  entry: string
+  pkg?: PluginPackage
+}
+export type Missing = Plan & {
+  source: PluginSource
+  target: string
+  pkg?: PluginPackage
+  message: string
+}
+export type Loaded = Resolved & {
+  mod: Record<string, unknown>
+}
 
-  type Candidate = { origin: ConfigPlugin.Origin; plan: Plan }
-  type Report = {
-    start?: (candidate: Candidate, retry: boolean) => void
-    missing?: (candidate: Candidate, retry: boolean, message: string, resolved: Missing) => void
-    error?: (
-      candidate: Candidate,
-      retry: boolean,
-      stage: "install" | "entry" | "compatibility" | "load",
-      error: unknown,
-      resolved?: Resolved,
-    ) => void
-  }
+type Candidate = { origin: ConfigPlugin.Origin; plan: Plan }
+type Report = {
+  start?: (candidate: Candidate, retry: boolean) => void
+  missing?: (candidate: Candidate, retry: boolean, message: string, resolved: Missing) => void
+  error?: (
+    candidate: Candidate,
+    retry: boolean,
+    stage: "install" | "entry" | "compatibility" | "load",
+    error: unknown,
+    resolved?: Resolved,
+  ) => void
+}
 
-  function plan(item: ConfigPlugin.Spec): Plan {
-    const spec = ConfigPlugin.pluginSpecifier(item)
-    return { spec, options: ConfigPlugin.pluginOptions(item), deprecated: isDeprecatedPlugin(spec) }
+function plan(item: ConfigPlugin.Spec): Plan {
+  const spec = ConfigPlugin.pluginSpecifier(item)
+  return { spec, options: ConfigPlugin.pluginOptions(item), deprecated: isDeprecatedPlugin(spec) }
+}
+
+export async function resolve(
+  plan: Plan,
+  kind: PluginKind,
+): Promise<
+  | { ok: true; value: Resolved }
+  | { ok: false; stage: "missing"; value: Missing }
+  | { 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`) }
 
-  export async function resolve(
-    plan: Plan,
-    kind: PluginKind,
-  ): Promise<
-    | { ok: true; value: Resolved }
-    | { ok: false; stage: "missing"; value: Missing }
-    | { ok: false; stage: "install" | "entry" | "compatibility"; error: unknown }
-  > {
-    let target = ""
-    try {
-      target = await resolvePluginTarget(plan.spec)
-    } catch (error) {
-      return { ok: false, stage: "install", error }
+  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: "missing",
+      value: {
+        ...plan,
+        source: base.source,
+        target: base.target,
+        pkg: base.pkg,
+        message: `Plugin ${plan.spec} does not expose a ${kind} entrypoint`,
+      },
     }
-    if (!target) return { ok: false, stage: "install", error: new Error(`Plugin ${plan.spec} target is empty`) }
 
-    let base
+  if (base.source === "npm") {
     try {
-      base = await createPluginEntry(plan.spec, target, kind)
+      await checkPluginCompatibility(base.target, InstallationVersion, base.pkg)
     } catch (error) {
-      return { ok: false, stage: "entry", error }
-    }
-    if (!base.entry)
-      return {
-        ok: false,
-        stage: "missing",
-        value: {
-          ...plan,
-          source: base.source,
-          target: base.target,
-          pkg: base.pkg,
-          message: `Plugin ${plan.spec} does not expose a ${kind} entrypoint`,
-        },
-      }
-
-    if (base.source === "npm") {
-      try {
-        await checkPluginCompatibility(base.target, InstallationVersion, base.pkg)
-      } catch (error) {
-        return { ok: false, stage: "compatibility", error }
-      }
+      return { ok: false, stage: "compatibility", error }
     }
-    return { ok: true, value: { ...plan, source: base.source, target: base.target, entry: base.entry, pkg: base.pkg } }
   }
+  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 } }
+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 } }
+}
 
-  async function attempt<R>(
-    candidate: Candidate,
-    kind: PluginKind,
-    retry: boolean,
-    finish: ((load: Loaded, origin: ConfigPlugin.Origin, retry: boolean) => Promise<R | undefined>) | undefined,
-    missing: ((value: Missing, origin: ConfigPlugin.Origin, retry: boolean) => Promise<R | undefined>) | undefined,
-    report: Report | undefined,
-  ): Promise<R | undefined> {
-    const plan = candidate.plan
-    if (plan.deprecated) return
-    report?.start?.(candidate, retry)
-    const resolved = await resolve(plan, kind)
-    if (!resolved.ok) {
-      if (resolved.stage === "missing") {
-        if (missing) {
-          const value = await missing(resolved.value, candidate.origin, retry)
-          if (value !== undefined) return value
-        }
-        report?.missing?.(candidate, retry, resolved.value.message, resolved.value)
-        return
+async function attempt<R>(
+  candidate: Candidate,
+  kind: PluginKind,
+  retry: boolean,
+  finish: ((load: Loaded, origin: ConfigPlugin.Origin, retry: boolean) => Promise<R | undefined>) | undefined,
+  missing: ((value: Missing, origin: ConfigPlugin.Origin, retry: boolean) => Promise<R | undefined>) | undefined,
+  report: Report | undefined,
+): Promise<R | undefined> {
+  const plan = candidate.plan
+  if (plan.deprecated) return
+  report?.start?.(candidate, retry)
+  const resolved = await resolve(plan, kind)
+  if (!resolved.ok) {
+    if (resolved.stage === "missing") {
+      if (missing) {
+        const value = await missing(resolved.value, candidate.origin, retry)
+        if (value !== undefined) return value
       }
-      report?.error?.(candidate, retry, resolved.stage, resolved.error)
+      report?.missing?.(candidate, retry, resolved.value.message, resolved.value)
       return
     }
-    const loaded = await load(resolved.value)
-    if (!loaded.ok) {
-      report?.error?.(candidate, retry, "load", loaded.error, resolved.value)
-      return
-    }
-    if (!finish) return loaded.value as R
-    return finish(loaded.value, candidate.origin, retry)
+    report?.error?.(candidate, retry, resolved.stage, resolved.error)
+    return
   }
-
-  type Input<R> = {
-    items: ConfigPlugin.Origin[]
-    kind: PluginKind
-    wait?: () => Promise<void>
-    finish?: (load: Loaded, origin: ConfigPlugin.Origin, retry: boolean) => Promise<R | undefined>
-    missing?: (value: Missing, origin: ConfigPlugin.Origin, retry: boolean) => Promise<R | undefined>
-    report?: Report
+  const loaded = await load(resolved.value)
+  if (!loaded.ok) {
+    report?.error?.(candidate, retry, "load", loaded.error, resolved.value)
+    return
   }
+  if (!finish) return loaded.value as R
+  return finish(loaded.value, candidate.origin, retry)
+}
 
-  export async function loadExternal<R = Loaded>(input: Input<R>): Promise<R[]> {
-    const candidates = input.items.map((origin) => ({ origin, plan: plan(origin.spec) }))
-    const list: Array<Promise<R | undefined>> = []
-    for (const candidate of candidates) {
-      list.push(attempt(candidate, input.kind, false, input.finish, input.missing, input.report))
-    }
-    const out = await Promise.all(list)
-    if (input.wait) {
-      let deps: Promise<void> | undefined
-      for (let i = 0; i < candidates.length; i++) {
-        if (out[i] !== undefined) continue
-        const candidate = candidates[i]
-        if (!candidate || pluginSource(candidate.plan.spec) !== "file") continue
-        deps ??= input.wait()
-        await deps
-        out[i] = await attempt(candidate, input.kind, true, input.finish, input.missing, input.report)
-      }
+type Input<R> = {
+  items: ConfigPlugin.Origin[]
+  kind: PluginKind
+  wait?: () => Promise<void>
+  finish?: (load: Loaded, origin: ConfigPlugin.Origin, retry: boolean) => Promise<R | undefined>
+  missing?: (value: Missing, origin: ConfigPlugin.Origin, retry: boolean) => Promise<R | undefined>
+  report?: Report
+}
+
+export async function loadExternal<R = Loaded>(input: Input<R>): Promise<R[]> {
+  const candidates = input.items.map((origin) => ({ origin, plan: plan(origin.spec) }))
+  const list: Array<Promise<R | undefined>> = []
+  for (const candidate of candidates) {
+    list.push(attempt(candidate, input.kind, false, input.finish, input.missing, input.report))
+  }
+  const out = await Promise.all(list)
+  if (input.wait) {
+    let deps: Promise<void> | undefined
+    for (let i = 0; i < candidates.length; i++) {
+      if (out[i] !== undefined) continue
+      const candidate = candidates[i]
+      if (!candidate || pluginSource(candidate.plan.spec) !== "file") continue
+      deps ??= input.wait()
+      await deps
+      out[i] = await attempt(candidate, input.kind, true, input.finish, input.missing, input.report)
     }
-    const ready: R[] = []
-    for (const item of out) if (item !== undefined) ready.push(item)
-    return ready
   }
+  const ready: R[] = []
+  for (const item of out) if (item !== undefined) ready.push(item)
+  return ready
 }
+
+export * as PluginLoader from "./loader"