openapi-format
Format an OpenAPI document by ordering and filtering fields.
The openapi-format CLI can load an OpenAPI file, sorts the OpenAPI fields by ordering them in a hierarchical order, and can
output the file with clean indenting, to either JSON or YAML.
Table of content
Use-cases
When working on large OpenAPI documents or with multiple team members, the file can be become messy and difficult to
compare changes. By sorting it from time to time, the fields are all ordered in a structured manner, which will help you
to maintain the file with greater ease.
The filtering is a handy add-on to remove specific elements from the OpenAPI like internal endpoints, beta tags, ...
This can be useful in CI/CD pipelines, where the OpenAPI is used as source for other documents like Web documentation,
Postman collections, test suites, ...
Features
Installation
Local Installation (recommended)
While possible to install globally, we recommend that you add the openapi-format CLI to the node_modules
by using:
$ npm install --save openapi-format
or using yarn...
$ yarn add openapi-format
Note that this will require you to run the openapi-format CLI with npx openapi-format your-openapi-file.yaml
or, if
you are using an older versions of npm, ./node_modules/.bin/openapi-format your-openapi-file.yaml
.
Global Installation
$ npm install -g openapi-format
NPX usage
To execute the CLI without installing it via npm, use the npx method
$ npx openapi-format your-openapi-file.yaml
Command Line Interface
openapi-format.js <input-file> -o [ouptut-file] [options]
Arguments:
infile the OpenAPI document, can be either a .json or .yaml file
outfile the output file is optional and be either a .json or .yaml file. Files that end in `.json` will be formatted
as JSON files that end in `.yaml` or `.yml` will be YAML format
Options:
-o, --output Save the formated OpenAPI file as JSON/YAML [path]
--sortFile The file to specify custom OpenAPI fields ordering [path]
--filterFile The file to specify filter setting [path]
--no-sort Don't sort the file [boolean]
--rename Rename the OpenAPI title [string]
--configFile The file with all the format config options [path]
--json Prints the file to stdout as JSON [boolean]
--yaml Prints the file to stdout as YAML [boolean]
--help Show help [boolean]
--verbose Output more details of the filter process [count]
OpenAPI format options
Parameter | Alias | Description | Input type | Default | Required/Optional |
---|
file | | the original OpenAPI file | path to file | | required |
--output | -o | save the formatted OpenAPI file as JSON/YAML | path to file | | optional |
--sortFile | -s | the file to specify custom OpenAPI fields ordering | path to file | defaultSort.json | optional |
--filterFile | -f | the file to specify filter setting | path to file | | optional |
--no-sort | | don't sort the file | boolean | FALSE | optional |
--rename | | rename the OpenAPI title | string | | optional |
--configFile | -c | the file with all the format config options | path to file | | optional |
--json | | prints the file to stdout as JSON | | FALSE | optional |
--yaml | | prints the file to stdout as YAML | | FALSE | optional |
--verbose | -v, -vv, -vvv | verbosity that can be increased, which will show more output of the process | | | optional |
--help | h | display help for command | | | optional |
OpenAPI sort configuration options
The default sorting based on the following logic, which is stored in
the defaultSort.json file. You can easily
modify this by specifying your own ordering per key, which can passed on to the CLI (see below for an example on how to
do this).
OpenAPI filter options
By specifying the desired filter values for the available filter keys, the openapi-format CLI will strip out any
matching item from the OpenAPI document.
For more complex use-cases, we can advise the excellent https://github.com/Mermade/openapi-filter package, which has
really extended options for filtering OpenAPI documents.
Key | Description | Type | Examples |
---|
methods | a list OpenAPI methods. | array | ['get','post','put'] |
tags | a list OpenAPI tags. | array | ['pet','user'] |
operationIds | a list OpenAPI operation ID's. | array | ['findPetsByStatus','updatePet'] |
flags | a list of custom flags | array | ['x-exclude','x-internal'] |
Some more details on the available filter keys:
This will remove all fields and attached fields that match the verbs. In the example below, this would mean that
all get
, put
, post
items would be removed from the OpenAPI document.
openapi: 3.0.0
info:
title: API
version: 1.0.0
paths:
/pets:
get:
summary: Finds Pets by status
put:
summary: Update an existing pet
This will remove all fields and attached fields that match the tags. In the example below, this would mean that all
items with the tags pet
or user
would be removed from the OpenAPI document.
For example:
openapi: 3.0.0
info:
title: API
version: 1.0.0
paths:
/pets:
put:
tags:
- pet
summary: Update an existing pet
This will remove specific fields and attached fields that match the operation ID's. In the example below, this would
mean that the item with operationID findPetsByStatus
would be removed from the OpenAPI document.
For example:
openapi: 3.0.0
info:
title: API
version: 1.0.0
paths:
/pets:
get:
operationId: findPetsByStatus
- flags: Refers to a custom property which can be set on any field in the OpenAPI document.
This will remove all fields and attached fields that match the flags. In the example below, this would mean that all
items with the flag x-exclude
would be removed from the OpenAPI document.
For example:
openapi: 3.0.0
info:
title: API
version: 1.0.0
paths:
/pets:
get:
x-exclude: true
CLI sort usage
- Format a spec with the default sorting and saves it as a new JSON file
$ openapi-format openapi.json openapi-formatted.json
-Format a OpenAPI document with the default sorting and saves it as a new YAML file
$ openapi-format openapi.json openapi.yaml
- Format a OpenAPI document with the default sorting and output it as JSON to STDOUT
$ openapi-format openapi.json --json
- Format a OpenAPI document with the default sorting and output it as YAML to STDOUT
$ openapi-format openapi.json --yaml
- Format a OpenAPI document with the default sorting and save it as YAML
$ openapi-format openapi.json openapi.yaml
- Format a OpenAPI document but skip the sorting and save it as a new JSON file
example:
$ openapi-format openapi.json openapi-formatted.json --no-sort
Which should keep the OpenAPI fields in the same order. This can be needed, when you only want to do a filtering or
rename action.
CLI filter usage
- Format a OpenAPI document by filtering fields, default sorting and saves it as a new file
When you want to strip certain flags, tags, methods, operationID's, you can pass a filterFile
which contains the
specific values for the flags, tags, methods, operationID's.
This can be useful to combine with the sorting, to end-up with an order and filtered OpenAPI document.
example:
$ openapi-format openapi.json openapi-formatted.json --filter customFilter.yaml
where the customFilter.yaml
would contain a combination of all the elements you want to filter out.
flags:
- x-visibility
flagValues: [ ]
tags: [ ]
operationIds:
- addPet
- findPetsByStatus
CLI rename usage
- Format a OpenAPI document by changing the title and saves it as a new JSON file
During CI/CD pipelines, you might want to create different results of the OpenAPI document. Having the option to rename
them, might make it easier to work with the results, so that is why we provide this command option.
$ openapi-format openapi.json openapi.json --rename "OpenAPI Petstore - OpenAPI 3.0"
which results in
{
"openapi": "3.0.2",
"info": {
"title": "Swagger Petstore - OpenAPI 3.0",
{
"openapi": "3.0.2",
"info": {
"title": "Swagger Petstore - OpenAPI 3.0",
CLI configuration usage
All the CLI options can be managed in separate configuration file and passed along the openapi-format command. This will
make configuration easier, especially in CI/CD implementations where the configuration can be stored in version control
systems.
example:
$ openapi-format openapi.json --configFil openapi-format-options.json
The formatting will happen based on all the options set in the openapi-format-options.json
file. All the
available OpenAPI format options can be used in the
config file.
Credits
This package is inspired by
the @microsoft.azure/format-spec from @fearthecowboy. The
original code was not available on Github, with the last update was 3 years ago, so to improve support and extend it we
tried to reproduce the original functionality.
The filter capabilities from openapi-format
are a light version inspired by the work from @MikeRalphson on
the https://github.com/Mermade/openapi-filter package.