feat(plugin): add buildStart hook

.changeset/clean-mugs-fold.md

@@ -0,0 +1,5 @@
+---
+'@umijs/tnf': patch
+---
+
+feat(plugin): add buildStart hook

docs/plugin.md

@@ -1,11 +1,23 @@
 # Plugin
 
+## Properties
+
+### name
+
+- Type: `string`
+
+Plugin name.
+
+### enforce
+
+- Type: `'pre' | 'post'`
+
+Plugin execution order.
+
 ## General Hooks
 
 ### buildStart
 
-> Not implemented
-
 - Type: `(ctx: { command: string }) => void | Promise<void>`
 
 Called when build start.

examples/normal/.tnfrc.ts

@@ -9,6 +9,9 @@ export default defineConfig({
   },
   plugins: [
     {
+      buildStart: ({ command }) => {
+        console.log('buildStart', command);
+      },
       buildEnd: ({ command, err }) => {
         console.log('buildEnd', command, err);
       },

src/cli.ts

@@ -7,7 +7,7 @@ import { debug, error, info, warn } from './fishkit/logger';
 import * as logger from './fishkit/logger';
 import { checkVersion, setNoDeprecation, setNodeTitle } from './fishkit/node';
 import { mock } from './funplugins/mock/mock';
-import { PluginManager } from './plugin/plugin_manager';
+import { PluginHookType, PluginManager } from './plugin/plugin_manager';
 import { type Context, Mode } from './types';
 
 async function buildContext(cwd: string): Promise<Context> {
@@ -46,6 +46,16 @@ async function run(cwd: string) {
   const context = await buildContext(cwd);
   const cmd = context.argv._[0];
   assert(cmd, 'Command is required');
+
+  if (cmd === 'build' || cmd === 'dev') {
+    await context.pluginManager.apply({
+      hook: 'buildStart',
+      args: [{ command: cmd }],
+      type: PluginHookType.Parallel,
+      pluginContext: context.pluginContext,
+    });
+  }
+
   switch (cmd) {
     case 'build':
       const { build } = await import('./build.js');