angel_file_service 1.1.0+2

  • Installing
  • Versions
  • 75


Angel service that persists data to a file on disk, stored as a JSON list. It uses a simple mutex to prevent race conditions, and caches contents in memory until changes are made.

The file will be created on read/write, if it does not already exist.

This package is useful in development, as it prevents you from having to install an external database to run your server.

When running a multi-threaded server, there is no guarantee that file operations will be mutually excluded. Thus, try to only use this one a single-threaded server if possible, or one with very low load.

While not necessarily slow, this package makes no promises about performance.


configureServer(Angel app) async {
  // Just like a normal service
    new JsonFileService(
      const LocalFileSystem().file('todos_db.json')


  • create now uses the underlying store, instead of manually patching


  • Analyzer nitpick for pana


  • Updated to framework v1.1.x
  • Use package:file
  • Allow a custom store

Use this package as a library

1. Depend on it

Add this to your package's pubspec.yaml file:

  angel_file_service: "^1.1.0+2"

2. Install it

You can install packages from the command line:

with pub:

$ pub get

with Flutter:

$ flutter packages get

Alternatively, your editor might support pub get or flutter packages get. Check the docs for your editor to learn more.

3. Import it

Now in your Dart code, you can use:

      import 'package:angel_file_service/angel_file_service.dart';
Version Uploaded Documentation Archive
1.1.0+2 Dec 22, 2017 Go to the documentation of angel_file_service 1.1.0+2 Download angel_file_service 1.1.0+2 archive
1.1.0+1 Dec 21, 2017 Go to the documentation of angel_file_service 1.1.0+1 Download angel_file_service 1.1.0+1 archive
1.1.0 Dec 21, 2017 Go to the documentation of angel_file_service 1.1.0 Download angel_file_service 1.1.0 archive
1.0.0 Jun 13, 2017 Go to the documentation of angel_file_service 1.0.0 Download angel_file_service 1.0.0 archive


We analyzed this package on Jun 19, 2018, and provided a score, details, and suggestions below. Analysis was completed with status completed using:

  • Dart: 2.0.0-dev.63.0
  • pana: 0.11.3


Describes how popular the package is relative to other packages. [more]
64 / 100
Code health derived from static analysis. [more]
76 / 100
Reflects how tidy and up-to-date the package is. [more]
99 / 100
Overall score:
Weighted score of the above. [more]
Learn more about scoring.


Detected platforms: Flutter, web, other

No platform restriction found in primary library package:angel_file_service/angel_file_service.dart.


  • Fix analysis and formatting issues.

    Analysis or formatting checks reported 1 error 3 hints.

    Strong-mode analysis of lib/angel_file_service.dart failed with the following error:

    line: 52 col: 12
    The return type 'void' isn't a 'Future', as defined by the method 'close'.

  • The description is too short.

    Add more detail about the package, what it does and what is its target use case. Try to write at least 60 characters.

  • Maintain an example.

    Create a short demo in the example/ directory to show how to use this package. Common file name patterns include: main.dart, example.dart or you could also use angel_file_service.dart.


Package Constraint Resolved Available
Direct dependencies
Dart SDK >=1.19.0
angel_framework ^1.1.0-alpha 1.1.4+3
file ^2.0.0 2.3.7 5.0.1
pool ^1.0.0 1.3.5
Transitive dependencies
angel_http_exception 1.0.0
angel_model 1.0.0
angel_route 2.0.6
async 2.0.7
body_parser 1.1.0
charcode 1.1.1
code_buffer 1.0.0
collection 1.14.10
combinator 1.0.0
container 0.1.2
dart2_constant 1.0.1+dart2
http_parser 3.1.2
http_server 0.9.7
intl 0.15.6
json_god 2.0.0-beta+1
logging 0.11.3+1
matcher 0.12.3
merge_map 1.0.0
meta 1.1.5
mime 0.9.6+1
path 1.6.1
quiver_hashcode 1.0.0
random_string 0.0.1
source_span 1.4.0
stack_trace 1.9.2
string_scanner 1.0.2
tuple 1.0.1
typed_data 1.1.5