https://github.com/apollographql/apollo-codegen

✏️ Apollo CLI for client tooling (Mostly replaced by Rover)
https://github.com/apollographql/apollo-codegen

code-generation flow graphql swift typescript

Last synced: 11 days ago
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✏️ Apollo CLI for client tooling (Mostly replaced by Rover)

• Host: GitHub
• URL: https://github.com/apollographql/apollo-codegen
• Owner: apollographql
• License: mit
• Created: 2016-08-12T15:28:09.000Z (about 8 years ago)
• Default Branch: master
• Last Pushed: 2024-10-25T15:24:17.000Z (14 days ago)
• Last Synced: 2024-10-27T20:09:11.987Z (12 days ago)
• Topics: code-generation, flow, graphql, swift, typescript
• Language: TypeScript
• Homepage: https://apollographql.com
• Size: 29 MB
• Stars: 3,040
• Watchers: 63
• Forks: 468
• Open Issues: 384
• Metadata Files:
  • Readme: README.md
  • Changelog: CHANGELOG.md
  • Contributing: CONTRIBUTING.md
  • License: LICENSE

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README

        
# Apollo CLI

[![GitHub license](https://img.shields.io/badge/license-MIT-lightgrey.svg?maxAge=2592000)](https://raw.githubusercontent.com/apollographql/apollo-tooling/master/LICENSE) [![npm](https://img.shields.io/npm/v/apollo.svg)](https://www.npmjs.com/package/apollo) [![Get on Slack](https://img.shields.io/badge/spectrum-join-orange.svg)](https://spectrum.chat/apollo?tab=posts)

---

> **[2023-03-29] Note - all `apollo service:*` commands will reach end-of-life on April 28th, 2023.** Refer to this [blog post](https://www.apollographql.com/blog/announcement/backend/announcing-the-end-of-life-schedule-for-apollo-cli-service-commands/) for more details.

---

> **[2022-07-07] Are you here for codegen?** We highly recommend using [graphql-code-generator](https://www.graphql-code-generator.com/) instead. Codegen in this repo is no longer supported and will be removed completely in a future version. For additional migration details, please see this fantastic writeup by @dotansimha: https://github.com/apollographql/apollo-tooling/issues/2053

---

> **[2022-01-21] Note - Upcoming Deprecation Plans:** We (Apollo) are working towards fully deprecating this repository and its related projects. Most of the functionality in this repository has been replaced by newer projects and the rest will be soon. We'll share detailed migration documentation when everything here is ready to be officially deprecated, but just a heads up in case you're planning on adopting anything here for a new project (which you still can of course if the tooling here works for you - support for this tooling will be minimal however).

---

> **[2021-07-23] Note - Housekeeping:** Apollo's GraphQL VSCode extension is no longer housed in this repository. It is now maintained separately in [this repo](https://github.com/apollographql/vscode-graphql).

---

Apollo CLI brings together your GraphQL clients and servers with tools for validating your schema, linting your operations for compatibility with your server, and generating static types for improved client-side type safety.

* [Apollo CLI](#apollo-cli)

* [Usage](#usage)

* [Commands](#commands)

* [Configuration](#configuration)

* [Code Generation](#code-generation)

* [Contributing](#contributing)

# Usage

**Disclaimer**: The following API documentation is only for the latest version released on NPM, and may not be accurate for previous or future versions.

```sh-session

$ npm install -g apollo

$ apollo COMMAND

running command...

$ apollo (-v|--version|version)

apollo/2.33.11 darwin-arm64 node-v16.14.2

$ apollo --help [COMMAND]

USAGE

  $ apollo COMMAND

...

```

# Commands

* [`apollo client:check`](#apollo-clientcheck)

* [`apollo client:codegen [OUTPUT]`](#apollo-clientcodegen-output)

* [`apollo client:download-schema OUTPUT`](#apollo-clientdownload-schema-output)

* [`apollo client:extract OUTPUT`](#apollo-clientextract-output)

* [`apollo client:push`](#apollo-clientpush)

* [`apollo help [COMMAND]`](#apollo-help-command)

* [`apollo plugins`](#apollo-plugins)

* [`apollo plugins:inspect PLUGIN...`](#apollo-pluginsinspect-plugin)

* [`apollo plugins:install PLUGIN...`](#apollo-pluginsinstall-plugin)

* [`apollo plugins:link PLUGIN`](#apollo-pluginslink-plugin)

* [`apollo plugins:uninstall PLUGIN...`](#apollo-pluginsuninstall-plugin)

* [`apollo plugins:update`](#apollo-pluginsupdate)

* [`apollo service:check`](#apollo-servicecheck)

* [`apollo service:delete`](#apollo-servicedelete)

* [`apollo service:download OUTPUT`](#apollo-servicedownload-output)

* [`apollo service:list`](#apollo-servicelist)

* [`apollo service:push`](#apollo-servicepush)

## `apollo client:check`

Check a client project against a pushed service

```

USAGE

  $ apollo client:check

OPTIONS

  -c, --config=config

      Path to your Apollo config file

  -g, --graph=graph

      The ID for the graph in Apollo to operate client commands with.

      Overrides config file if set.

  -v, --variant=variant

      The variant of the graph in Apollo to associate this client to

  --clientName=clientName

      Name of the client that the queries will be attached to

  --clientReferenceId=clientReferenceId

      Reference id for the client which will match ids from client traces,

      will use clientName if not provided

  --clientVersion=clientVersion

      The version of the client that the queries will be attached to

  --endpoint=endpoint

      The URL for the CLI use to introspect your service

  --excludes=excludes

      Glob of files to exclude for GraphQL operations. Caveat: this doesn't

      currently work in watch mode

  --header=header

      Additional header to send during introspection. May be used multiple

      times to add multiple headers. NOTE: The `--endpoint` flag is REQUIRED

      if using the `--header` flag.

  --includes=includes

      Glob of files to search for GraphQL operations. This should be used to

      find queries *and* any client schema extensions

  --key=key

      The API key to use for authentication to Apollo

  --queries=queries

      Deprecated in favor of the includes flag

  --tagName=tagName

      Name of the template literal tag used to identify template literals

      containing GraphQL queries in Javascript/Typescript code

```

_See code: [src/commands/client/check.ts](https://github.com/apollographql/apollo-tooling/blob/master/packages/apollo/src/commands/client/check.ts)_

## `apollo client:codegen [OUTPUT]`

Generate static types for GraphQL queries. Can use the published schema in the Apollo registry or a downloaded schema.

```

USAGE

  $ apollo client:codegen [OUTPUT]

ARGUMENTS

  OUTPUT

      Directory to which generated files will be written.

      - For TypeScript/Flow generators, this specifies a directory relative

      to each source file by default.

      - For TypeScript/Flow generators with the "outputFlat" flag is set,

      and for the Swift generator, this specifies a file or directory

      (absolute or relative to the current working directory) to which:

      - a file will be written for each query (if "output" is a directory)

      - all generated types will be written

      - For all other types, this defines a file (absolute or relative to

      the current working directory) to which all generated types are

      written.

OPTIONS

  -c, --config=config

      Path to your Apollo config file

  -g, --graph=graph

      The ID for the graph in Apollo to operate client commands with.

      Overrides config file if set.

  -v, --variant=variant

      The variant of the graph in Apollo to associate this client to

  --[no-]addTypename

      [default: true] Automatically add __typename to your queries, can be

      unset with --no-addTypename

  --clientName=clientName

      Name of the client that the queries will be attached to

  --clientReferenceId=clientReferenceId

      Reference id for the client which will match ids from client traces,

      will use clientName if not provided

  --clientVersion=clientVersion

      The version of the client that the queries will be attached to

  --customScalarsPrefix=customScalarsPrefix

      Include a prefix when using provided types for custom scalars

  --endpoint=endpoint

      The URL for the CLI use to introspect your service

  --excludes=excludes

      Glob of files to exclude for GraphQL operations. Caveat: this doesn't

      currently work in watch mode

  --globalTypesFile=globalTypesFile

      By default, TypeScript will put a file named "globalTypes.ts" inside

      the "output" directory. Set "globalTypesFile" to specify a different

      path. Alternatively, set "tsFileExtension" to modify the extension of

      the file, for example "d.ts" will output "globalTypes.d.ts"

  --header=header

      Additional header to send during introspection. May be used multiple

      times to add multiple headers. NOTE: The `--endpoint` flag is REQUIRED

      if using the `--header` flag.

  --includes=includes

      Glob of files to search for GraphQL operations. This should be used to

      find queries *and* any client schema extensions

  --key=key

      The API key to use for authentication to Apollo

  --localSchemaFile=localSchemaFile

      Path to one or more local GraphQL schema file(s), as introspection

      result or SDL. Supports comma-separated list of paths (ex.

      `--localSchemaFile=schema.graphql,extensions.graphql`)

  --mergeInFieldsFromFragmentSpreads

      Merge fragment fields onto its enclosing type

  --namespace=namespace

      The namespace to emit generated code into.

  --omitDeprecatedEnumCases

      Omit deprecated enum cases from generated code [Swift only]

  --only=only

      Parse all input files, but only output generated code for the

      specified file [Swift only]

  --operationIdsPath=operationIdsPath

      Path to an operation id JSON map file. If specified, also stores the

      operation ids (hashes) as properties on operation types [currently

      Swift-only]

  --outputFlat

      By default, TypeScript/Flow will put each generated file in a

      directory next to its source file using the value of the "output" as

      the directory name. Set "outputFlat" to put all generated files in the

      directory relative to the current working directory defined by

      "output".

  --passthroughCustomScalars

      Use your own types for custom scalars

  --queries=queries

      Deprecated in favor of the includes flag

  --suppressSwiftMultilineStringLiterals

      Prevents operations from being rendered as multiline strings [Swift

      only]

  --tagName=tagName

      Name of the template literal tag used to identify template literals

      containing GraphQL queries in Javascript/Typescript code

  --target=target

      (required) Type of code generator to use (swift | typescript | flow |

      scala | json | json-modern (exposes raw json types))

  --tsFileExtension=tsFileExtension

      By default, TypeScript will output "ts" files. Set "tsFileExtension"

      to specify a different file extension, for example "d.ts"

  --useFlowExactObjects

      Use Flow exact objects for generated types [flow only]

  --useFlowReadOnlyTypes

      Use read only types for generated types [flow only]. **Deprecated in

      favor of `useReadOnlyTypes`.**

  --useReadOnlyTypes

      Use read only types for generated types [flow | typescript]

  --watch

      Watch for file changes and reload codegen

ALIASES

  $ apollo codegen:generate

```

_See code: [src/commands/client/codegen.ts](https://github.com/apollographql/apollo-tooling/blob/master/packages/apollo/src/commands/client/codegen.ts)_

## `apollo client:download-schema OUTPUT`

Download a schema from Apollo or a GraphQL endpoint in JSON or SDL format

```

USAGE

  $ apollo client:download-schema OUTPUT

ARGUMENTS

  OUTPUT  [default: schema.json] Path to write the introspection result

          to. Can be `.graphql`, `.gql`, `.graphqls`, or `.json`

OPTIONS

  -c, --config=config

      Path to your Apollo config file

  -g, --graph=graph

      The ID for the graph in Apollo to operate client commands with.

      Overrides config file if set.

  -v, --variant=variant

      The variant of the graph in Apollo to associate this client to

  --clientName=clientName

      Name of the client that the queries will be attached to

  --clientReferenceId=clientReferenceId

      Reference id for the client which will match ids from client traces,

      will use clientName if not provided

  --clientVersion=clientVersion

      The version of the client that the queries will be attached to

  --endpoint=endpoint

      The URL for the CLI use to introspect your service

  --excludes=excludes

      Glob of files to exclude for GraphQL operations. Caveat: this doesn't

      currently work in watch mode

  --header=header

      Additional header to send during introspection. May be used multiple

      times to add multiple headers. NOTE: The `--endpoint` flag is REQUIRED

      if using the `--header` flag.

  --includes=includes

      Glob of files to search for GraphQL operations. This should be used to

      find queries *and* any client schema extensions

  --key=key

      The API key to use for authentication to Apollo

  --queries=queries

      Deprecated in favor of the includes flag

  --tagName=tagName

      Name of the template literal tag used to identify template literals

      containing GraphQL queries in Javascript/Typescript code

```

_See code: [src/commands/client/download-schema.ts](https://github.com/apollographql/apollo-tooling/blob/master/packages/apollo/src/commands/client/download-schema.ts)_

## `apollo client:extract OUTPUT`

Extract queries from a client

```

USAGE

  $ apollo client:extract OUTPUT

ARGUMENTS

  OUTPUT  [default: manifest.json] Path to write the extracted queries to

OPTIONS

  -c, --config=config

      Path to your Apollo config file

  -g, --graph=graph

      The ID for the graph in Apollo to operate client commands with.

      Overrides config file if set.

  -v, --variant=variant

      The variant of the graph in Apollo to associate this client to

  --clientName=clientName

      Name of the client that the queries will be attached to

  --clientReferenceId=clientReferenceId

      Reference id for the client which will match ids from client traces,

      will use clientName if not provided

  --clientVersion=clientVersion

      The version of the client that the queries will be attached to

  --endpoint=endpoint

      The URL for the CLI use to introspect your service

  --excludes=excludes

      Glob of files to exclude for GraphQL operations. Caveat: this doesn't

      currently work in watch mode

  --header=header

      Additional header to send during introspection. May be used multiple

      times to add multiple headers. NOTE: The `--endpoint` flag is REQUIRED

      if using the `--header` flag.

  --includes=includes

      Glob of files to search for GraphQL operations. This should be used to

      find queries *and* any client schema extensions

  --key=key

      The API key to use for authentication to Apollo

  --preserveStringAndNumericLiterals

      Disable redaction of string and numerical literals.  Without this

      flag, these values will be replaced with empty strings (`''`) and

      zeroes (`0`) respectively.  This redaction is intended to avoid

      inadvertently outputting potentially personally identifiable

      information (e.g. embedded passwords  or API keys) into operation

      manifests

  --queries=queries

      Deprecated in favor of the includes flag

  --tagName=tagName

      Name of the template literal tag used to identify template literals

      containing GraphQL queries in Javascript/Typescript code

```

_See code: [src/commands/client/extract.ts](https://github.com/apollographql/apollo-tooling/blob/master/packages/apollo/src/commands/client/extract.ts)_

## `apollo client:push`

Register operations with Apollo, adding them to the safelist

```

USAGE

  $ apollo client:push

OPTIONS

  -c, --config=config

      Path to your Apollo config file

  -g, --graph=graph

      The ID for the graph in Apollo to operate client commands with.

      Overrides config file if set.

  -v, --variant=variant

      The variant of the graph in Apollo to associate this client to

  --clientName=clientName

      Name of the client that the queries will be attached to

  --clientReferenceId=clientReferenceId

      Reference id for the client which will match ids from client traces,

      will use clientName if not provided

  --clientVersion=clientVersion

      The version of the client that the queries will be attached to

  --endpoint=endpoint

      The URL for the CLI use to introspect your service

  --excludes=excludes

      Glob of files to exclude for GraphQL operations. Caveat: this doesn't

      currently work in watch mode

  --header=header

      Additional header to send during introspection. May be used multiple

      times to add multiple headers. NOTE: The `--endpoint` flag is REQUIRED

      if using the `--header` flag.

  --includes=includes

      Glob of files to search for GraphQL operations. This should be used to

      find queries *and* any client schema extensions

  --key=key

      The API key to use for authentication to Apollo

  --queries=queries

      Deprecated in favor of the includes flag

  --tagName=tagName

      Name of the template literal tag used to identify template literals

      containing GraphQL queries in Javascript/Typescript code

```

_See code: [src/commands/client/push.ts](https://github.com/apollographql/apollo-tooling/blob/master/packages/apollo/src/commands/client/push.ts)_

## `apollo help [COMMAND]`

display help for apollo

```

USAGE

  $ apollo help [COMMAND]

ARGUMENTS

  COMMAND  command to show help for

OPTIONS

  --all  see all commands in CLI

```

_See code: [@oclif/plugin-help](https://github.com/oclif/plugin-help/blob/v3.2.18/src/commands/help.ts)_

## `apollo plugins`

List installed plugins.

```

USAGE

  $ apollo plugins

OPTIONS

  --core  Show core plugins.

EXAMPLE

  $ apollo plugins

```

_See code: [@oclif/plugin-plugins](https://github.com/oclif/plugin-plugins/blob/v2.1.0/src/commands/plugins/index.ts)_

## `apollo plugins:inspect PLUGIN...`

Displays installation properties of a plugin.

```

USAGE

  $ apollo plugins:inspect PLUGIN...

ARGUMENTS

  PLUGIN  [default: .] Plugin to inspect.

OPTIONS

  -h, --help     Show CLI help.

  -v, --verbose

EXAMPLE

  $ apollo plugins:inspect myplugin

```

_See code: [@oclif/plugin-plugins](https://github.com/oclif/plugin-plugins/blob/v2.1.0/src/commands/plugins/inspect.ts)_

## `apollo plugins:install PLUGIN...`

Installs a plugin into the CLI.

```

USAGE

  $ apollo plugins:install PLUGIN...

ARGUMENTS

  PLUGIN  Plugin to install.

OPTIONS

  -f, --force    Run yarn install with force flag.

  -h, --help     Show CLI help.

  -v, --verbose

DESCRIPTION

  Can be installed from npm or a git url.

  Installation of a user-installed plugin will override a core plugin.

  e.g. If you have a core plugin that has a 'hello' command, installing a

  user-installed plugin with a 'hello' command will override the core

  plugin implementation. This is useful if a user needs to update core

  plugin functionality in the CLI without the need to patch and update the

   whole CLI.

ALIASES

  $ apollo plugins:add

EXAMPLES

  $ apollo plugins:install myplugin

  $ apollo plugins:install https://github.com/someuser/someplugin

  $ apollo plugins:install someuser/someplugin

```

_See code: [@oclif/plugin-plugins](https://github.com/oclif/plugin-plugins/blob/v2.1.0/src/commands/plugins/install.ts)_

## `apollo plugins:link PLUGIN`

Links a plugin into the CLI for development.

```

USAGE

  $ apollo plugins:link PLUGIN

ARGUMENTS

  PATH  [default: .] path to plugin

OPTIONS

  -h, --help     Show CLI help.

  -v, --verbose

DESCRIPTION

  Installation of a linked plugin will override a user-installed or core

  plugin.

  e.g. If you have a user-installed or core plugin that has a 'hello'

  command, installing a linked plugin with a 'hello' command will override

   the user-installed or core plugin implementation. This is useful for

  development work.

EXAMPLE

  $ apollo plugins:link myplugin

```

_See code: [@oclif/plugin-plugins](https://github.com/oclif/plugin-plugins/blob/v2.1.0/src/commands/plugins/link.ts)_

## `apollo plugins:uninstall PLUGIN...`

Removes a plugin from the CLI.

```

USAGE

  $ apollo plugins:uninstall PLUGIN...

ARGUMENTS

  PLUGIN  plugin to uninstall

OPTIONS

  -h, --help     Show CLI help.

  -v, --verbose

ALIASES

  $ apollo plugins:unlink

  $ apollo plugins:remove

```

_See code: [@oclif/plugin-plugins](https://github.com/oclif/plugin-plugins/blob/v2.1.0/src/commands/plugins/uninstall.ts)_

## `apollo plugins:update`

Update installed plugins.

```

USAGE

  $ apollo plugins:update

OPTIONS

  -h, --help     Show CLI help.

  -v, --verbose

```

_See code: [@oclif/plugin-plugins](https://github.com/oclif/plugin-plugins/blob/v2.1.0/src/commands/plugins/update.ts)_

## `apollo service:check`

[DEPRECATED] Check a service against known operation workloads to find breaking changes

```

USAGE

  $ apollo service:check

OPTIONS

  -c, --config=config

      Path to your Apollo config file

  -g, --graph=graph

      The ID of the graph in Apollo to check your proposed schema changes

      against. Overrides config file if set.

  -v, --variant=variant

      The variant to check the proposed schema against

  --author=author

      The author to associate with this proposed schema

  --branch=branch

      The branch name to associate with this check

  --commitId=commitId

      The SHA-1 hash of the commit to associate with this check

  --endpoint=endpoint

      The URL for the CLI use to introspect your service

  --header=header

      Additional header to send during introspection. May be used multiple

      times to add multiple headers. NOTE: The `--endpoint` flag is REQUIRED

      if using the `--header` flag.

  --ignoreFailures

      Exit with status 0 when the check completes, even if errors are found

  --json

      Output result in json, which can then be parsed by CLI tools such as

      jq.

  --key=key

      The API key to use for authentication to Apollo

  --localSchemaFile=localSchemaFile

      Path to one or more local GraphQL schema file(s), as introspection

      result or SDL. Supports comma-separated list of paths (ex.

      `--localSchemaFile=schema.graphql,extensions.graphql`)

  --markdown

      Output result in markdown.

  --queryCountThreshold=queryCountThreshold

      Minimum number of requests within the requested time window for a

      query to be considered.

  --queryCountThresholdPercentage=queryCountThresholdPercentage

      Number of requests within the requested time window for a query to be

      considered, relative to total request count. Expected values are

      between 0 and 0.05 (minimum 5% of total request volume)

  --serviceName=serviceName

      Provides the name of the implementing service for a federated graph.

      This flag will indicate that the schema is a partial schema from a

      federated service

  --validationPeriod=validationPeriod

      The size of the time window with which to validate the schema against.

      You may provide a number (in seconds), or an ISO8601 format duration

      for more granularity (see:

      https://en.wikipedia.org/wiki/ISO_8601#Durations)

DESCRIPTION

  -----------------------------------------------------------------

  DEPRECATED: This command will be removed from the `apollo` CLI in

  its next major version. Replacement functionality is available in

  the new Apollo Rover CLI: https://go.apollo.dev/t/migration

  -----------------------------------------------------------------

ALIASES

  $ apollo schema:check

```

_See code: [src/commands/service/check.ts](https://github.com/apollographql/apollo-tooling/blob/master/packages/apollo/src/commands/service/check.ts)_

## `apollo service:delete`

[DEPRECATED] Delete a federated service from Apollo and recompose remaining services

```

USAGE

  $ apollo service:delete

OPTIONS

  -c, --config=config        Path to your Apollo config file

  -g, --graph=graph          The ID of the graph in Apollo for which to

                             delete an implementing service. Overrides

                             config file if set.

  -v, --variant=variant      The variant to delete the implementing

                             service from

  -y, --yes                  Bypass confirmation when deleting a service

  --endpoint=endpoint        The URL for the CLI use to introspect your

                             service

  --header=header            Additional header to send during

                             introspection. May be used multiple times to

                             add multiple headers. NOTE: The `--endpoint`

                             flag is REQUIRED if using the `--header`

                             flag.

  --key=key                  The API key to use for authentication to

                             Apollo

  --serviceName=serviceName  (required) Provides the name of the

                             implementing service for a federated graph

DESCRIPTION

  -----------------------------------------------------------------

  DEPRECATED: This command will be removed from the `apollo` CLI in

  its next major version. Replacement functionality is available in

  the new Apollo Rover CLI: https://go.apollo.dev/t/migration

  -----------------------------------------------------------------

```

_See code: [src/commands/service/delete.ts](https://github.com/apollographql/apollo-tooling/blob/master/packages/apollo/src/commands/service/delete.ts)_

## `apollo service:download OUTPUT`

[DEPRECATED] Download the schema from your GraphQL endpoint.

```

USAGE

  $ apollo service:download OUTPUT

ARGUMENTS

  OUTPUT  [default: schema.json] Path to write the introspection result

          to. Supports .json output only.

OPTIONS

  -c, --config=config      Path to your Apollo config file

  -g, --graph=graph        The ID of the graph in the Apollo registry for

                           which to download the schema for. Overrides

                           config file if provided.

  -k, --skipSSLValidation  Allow connections to an SSL site without certs

  -v, --variant=variant    The variant to download the schema of

  --endpoint=endpoint      The URL for the CLI use to introspect your

                           service

  --header=header          Additional header to send during introspection.

                           May be used multiple times to add multiple

                           headers. NOTE: The `--endpoint` flag is

                           REQUIRED if using the `--header` flag.

  --key=key                The API key to use for authentication to Apollo

DESCRIPTION

  -----------------------------------------------------------------

  DEPRECATED: This command will be removed from the `apollo` CLI in

  its next major version. Replacement functionality is available in

  the new Apollo Rover CLI: https://go.apollo.dev/t/migration

  -----------------------------------------------------------------

ALIASES

  $ apollo schema:download

```

_See code: [src/commands/service/download.ts](https://github.com/apollographql/apollo-tooling/blob/master/packages/apollo/src/commands/service/download.ts)_

## `apollo service:list`

[DEPRECATED] List the services in a graph

```

USAGE

  $ apollo service:list

OPTIONS

  -c, --config=config    Path to your Apollo config file

  -g, --graph=graph      The ID of the graph in the Apollo registry for

                         which to list implementing services. Overrides

                         config file if set.

  -v, --variant=variant  The variant to list implementing services for

  --endpoint=endpoint    The URL for the CLI use to introspect your

                         service

  --header=header        Additional header to send during introspection.

                         May be used multiple times to add multiple

                         headers. NOTE: The `--endpoint` flag is REQUIRED

                         if using the `--header` flag.

  --key=key              The API key to use for authentication to Apollo

DESCRIPTION

  -----------------------------------------------------------------

  DEPRECATED: This command will be removed from the `apollo` CLI in

  its next major version. Replacement functionality is available in

  the new Apollo Rover CLI: https://go.apollo.dev/t/migration

  -----------------------------------------------------------------

```

_See code: [src/commands/service/list.ts](https://github.com/apollographql/apollo-tooling/blob/master/packages/apollo/src/commands/service/list.ts)_

## `apollo service:push`

[DEPRECATED] Push a service definition to Apollo

```

USAGE

  $ apollo service:push

OPTIONS

  -c, --config=config

      Path to your Apollo config file

  -g, --graph=graph

      The ID of the graph in Apollo to publish your service to. Overrides

      config file if set.

  -v, --variant=variant

      The variant to publish your service to in Apollo

  --author=author

      The author to associate with this publication

  --branch=branch

      The branch name to associate with this publication

  --commitId=commitId

      The SHA-1 hash of the commit to associate with this publication

  --endpoint=endpoint

      The URL for the CLI use to introspect your service

  --header=header

      Additional header to send during introspection. May be used multiple

      times to add multiple headers. NOTE: The `--endpoint` flag is REQUIRED

      if using the `--header` flag.

  --key=key

      The API key to use for authentication to Apollo

  --localSchemaFile=localSchemaFile

      Path to one or more local GraphQL schema file(s), as introspection

      result or SDL. Supports comma-separated list of paths (ex.

      `--localSchemaFile=schema.graphql,extensions.graphql`)

  --serviceName=serviceName

      Provides the name of the implementing service for a federated graph

  --serviceRevision=serviceRevision

      Provides a unique revision identifier for a change to an implementing

      service on a federated service push. The default of this is a git sha

  --serviceURL=serviceURL

      Provides the url to the location of the implementing service for a

      federated graph

DESCRIPTION

  -----------------------------------------------------------------

  DEPRECATED: This command will be removed from the `apollo` CLI in

  its next major version. Replacement functionality is available in

  the new Apollo Rover CLI: https://go.apollo.dev/t/migration

  -----------------------------------------------------------------

ALIASES

  $ apollo schema:publish

```

_See code: [src/commands/service/push.ts](https://github.com/apollographql/apollo-tooling/blob/master/packages/apollo/src/commands/service/push.ts)_

# Configuration

The Apollo CLI and VS Code extension can be configured with an Apollo config file. Apollo configuration is stored as a plain object in an `apollo.config.js` file which exports the configuration. For more information about configuring an Apollo project, see: https://www.apollographql.com/docs/devtools/apollo-config/.

> Note: the use of the `apollo` key in the project's package.json file for configuration is deprecated, and will no longer be supported in Apollo v3

You'll need to set up your Apollo configuration for all the features of the Apollo CLI and VS Code extension to work correctly. For full details on how to do that, [visit our docs](https://www.apollographql.com/docs/devtools/apollo-config/). A basic configuration (`apollo.config.js` style) looks something like this:

```js

module.exports = {

  client: {

    name: "My Client Project",

    service: "my-service-name"

  }

};

```

# Code Generation

## Accompanying Libraries

See [Apollo iOS](https://github.com/apollographql/apollo-ios) for details on the mapping from GraphQL results to Swift types, as well as runtime support for executing queries and mutations. For Scala, see [React Apollo Scala.js](https://github.com/apollographql/react-apollo-scalajs) for details on how to use generated Scala code in a Scala.js app with Apollo Client.

## `gql` template support

If the source file for generation is a JavaScript or TypeScript file, the codegen will try to extrapolate the queries inside the [gql tag](https://github.com/apollographql/graphql-tag) templates.

The tag name is configurable using the CLI `--tagName` option.

## Typescript and Flow

When using the codegen command with Typescript or Flow, make sure to add the `__typename` introspection field to every selection set within your graphql operations.

If you're using a client like `apollo-client` that does this automatically for your GraphQL operations, pass in the `--addTypename` option to `apollo codegen:generate` to make sure the generated Typescript and Flow types have the `__typename` field as well. This is required to ensure proper type generation support for `GraphQLUnionType` and `GraphQLInterfaceType` fields.

## Why is the \_\_typename field required?

Using the type information from the GraphQL schema, we can infer the possible types for fields. However, in the case of a `GraphQLUnionType` or `GraphQLInterfaceType`, there are multiple types that are possible for that field. This is best modeled using a disjoint union with the `__typename`

as the discriminant.

For example, given a schema:

```graphql

...

interface Character {

  name: String!

}

type Human implements Character {

  homePlanet: String

}

type Droid implements Character {

  primaryFunction: String

}

...

```

Whenever a field of type `Character` is encountered, it could be either a Human or Droid. Human and Droid objects

will have a different set of fields. Within your application code, when interacting with a `Character` you'll want to make sure to handle both of these cases.

Given this query:

```graphql

query Characters {

  characters(episode: NEW_HOPE) {

    name

    ... on Human {

      homePlanet

    }

    ... on Droid {

      primaryFunction

    }

  }

}

```

Apollo Codegen will generate a union type for Character.

```javascript

export type CharactersQuery = {

  characters: Array<

    | {

        __typename: "Human",

        name: string,

        homePlanet: ?string

      }

    | {

        __typename: "Droid",

        name: string,

        primaryFunction: ?string

      }

  >

};

```

This type can then be used as follows to ensure that all possible types are handled:

```javascript

function CharacterFigures({ characters }: CharactersQuery) {

  return characters.map(character => {

    switch (character.__typename) {

      case "Human":

        return (

          

        );

      case "Droid":

        return (

          

        );

    }

  });

}

```

# Contributing

[![Build Status](https://circleci.com/gh/apollographql/apollo-tooling.svg?style=svg)](https://circleci.com/gh/apollographql/apollo-tooling)

This repo is composed of multiple packages. The `apollo-cli` contains the core CLI commands. The `apollo-codegen-core` package contains all the compiler APIs needed to implement code generation support for new languages. The other `apollo-codegen-*` packages implement code generation support for individual languages.

Running tests locally:

```

npm install

npm test

```

You can also run `npm` commands within package folders after you have bootstrapped the repository (part of `npm install`).

> Note: if you have issues, try `npm run clean && npm i` to get a fresh install of the packages. Occasionally problems arise when removed dependencies stay around

## Nock tests

To display the debugging messages for nock, run the following command:

```bash

DEBUG=nock.* npm test

```

It can also be helpful to print standard out during testing. To enable logging, add the following configuration to the `stdout` function call during test creation:

```

.stdout({ print: true })

```

## Active Development / Debugging

To simplify the development process, you may want to step through and debug commands whose behavior you're modifying. To do this, run the executable with node in debug mode like so, where `` is a valid CLI command like `client:check` or `service:push`:

```

node --inspect-brk=9002 packages/apollo/bin/run 

```

If you're using VS Code, you can run the included "Attach to CLI Debugger" launch task and debug right from VS Code! Otherwise, you may use the Chrome inspector or [other Node debugger](https://nodejs.org/en/docs/guides/debugging-getting-started/) of your choice.

## Regenerating Mocked Network Data

Some integration tests rely on mocked server data (service:check for example). Mock data is generated by making real network requests and recording those requests with [`nock`'s recording feature](https://github.com/nock/nock#recording). Stop mocking network calls and add `nock.recorder.rec()` before network calls are made. For `service:check`, change `apiKey` to a real Apollo API key. Then run the tests and nock will output code to mock requests to the console. You can (and probably should) pare down the request to be less brittle (by only checking for an operation name, for example). See [`src/commands/service/__tests__/check.test.ts`](./packages/apollo/src/commands/service/__tests__/check.test.ts) for an example of how a mocked network request will look.

## Publishing

1. Make sure the `CHANGELOG.md` is updated with all changes committed since the last release. Make sure the versions for each package to update are correct.

2. Run `npm run release:version-bump -- `

   - Can use major, minor, patch, prepatch, etc for the bump type. If not used, the command will prompt and ask for the bump type.

   - This command updates git tags locally and on GitHub

3. Run npm run release:start-ci-publish locally

   - IMPORTANT: If publishing a prerelease (like `alpha`/`beta`/`rc`), set the tag that NPM will use to publish with the `APOLLO_DIST_TAG` environment variable. By default, if this isn't set, NPM will publish the prerelease to the `latest` tag (which isn't what we'd want).

   - Pushes a `publish/XXXXXXXXXX` tag to GitHub to trigger circle CI build

4. Circle will notify the appropriate Apollo team slack channel when ready to release

   - Slack channel member will confirm through the Apollo Deploy Bot

   - Circle will release to all channels (npm, cli binary to s3, vscode marketplace)

   - Another slack bot notification will confirm success of release.

## Maintainers

- [@JakeDawkins](https://github.com/jakedawkins) (Apollo)