移除 AssetManifest.json

import 'dart:convert';
import 'package:flutter/services.dart';

final String assetManifestContent = await rootBundle.loadString('AssetManifest.json');
final Map<Object?, Object?> decodedAssetManifest = 
    json.decode(assetManifestContent) as Map<String, Object?>;
final List<String> assets = decodedAssetManifest.keys.toList().cast<String>();

import 'package:flutter/services.dart';

final AssetManifest assetManifest = await AssetManifest.loadFromAssetBundle(rootBundle);
final List<String> assets = assetManifest.listAssets();

import 'dart:io';
import 'dart:typed_data';

import 'package:standard_message_codec/standard_message_codec.dart';

void main() {
  // The path to AssetManifest.bin depends on the target platform.
  final String pathToAssetManifest = './build/web/assets/AssetManifest.bin';
  final Uint8List manifest = File(pathToAssetManifest).readAsBytesSync();
  final Map<Object?, Object?> decoded = const StandardMessageCodec()
      .decodeMessage(ByteData.sublistView(manifest));
  final List<String> assets = decoded.keys.cast<String>().toList();
}