throws_collector 2.2.0+1

CLI tool to collect thrown exceptions and errors from Dart sources.

throws_collector

CLI tool to collect thrown errors from Dart sources and emit map files.

This tool is optional. It is a heuristic helper for throws_plugin and is most useful when you want more complete SDK/dependency coverage in throws.yaml.

Install

Add as a dev dependency:

dev_dependencies:
  throws_collector: any

Usage

dart run throws_collector

throws_collector.yaml

The tool reads throws_collector.yaml at the package root that lists throws_collector under dev_dependencies.

Example:

output_dir: throws_collector_gen
input:
  - dart_sdk:
    output: dart_errors.yaml
  - flutter_sdk:
    output: flutter_errors.yaml
  - flutter_errors_git.yaml:
    git: https://github.com/flutter/flutter/tree/3.41.0/packages/flutter/lib/src
    run_pub_get: true
  - dart_errors_git.yaml:
      git: https://github.com/dart-lang/sdk/tree/main/sdk/lib
    run_pub_get: false
  - bloc_errors.dart:
      package:
        name: bloc
        version: 9.2.0

Input types:

• dart_sdk: installed Dart SDK (output required)
• flutter_sdk: installed Flutter SDK (output required)
• path: local directory
• git: git URL (shallow clone)
• package: pub.dev package name and version

Output

Output is written to the throws_collector_gen/ directory in the package root. The output file name is taken from the input keys. Output format is inferred from the extension (.dart, .json, .yaml, .yml).

You can override the output directory with output_dir (relative to the package root or absolute).

Package inputs are downloaded from pub.dev and cached under .dart_tool/throws_collector/pub/ if they are not already in the global pub cache.

Git inputs run pub get by default to improve type resolution. Disable with run_pub_get: false for git inputs that cannot be resolved without extra setup.

For Dart output, the map name is inferred from the file name and camel-cased (for example, flutter_errors.g.dart -> flutterErrors).

The tool writes a Dart/JSON/YAML file containing a map of thrown errors. Keys are

Notes

• Uses resolved AST; results are best-effort and not guaranteed to be complete.
• Generated entries may include inferred types from static analysis.
• Collector output can be included in throws.yaml via include_paths.