[//]: # "This README.md file is auto-generated, all changes to this file will be lost." [//]: # "To regenerate it, use `python -m synthtool`." Google Cloud Platform logo # [Natural Language: Node.js Client](https://github.com/googleapis/google-cloud-node/tree/main/packages/google-cloud-language) [![release level](https://img.shields.io/badge/release%20level-stable-brightgreen.svg?style=flat)](https://cloud.google.com/terms/launch-stages) [![npm version](https://img.shields.io/npm/v/@google-cloud/language.svg)](https://www.npmjs.org/package/@google-cloud/language) Google Cloud Natural Language API client for Node.js A comprehensive list of changes in each version may be found in [the CHANGELOG](https://github.com/googleapis/google-cloud-node/tree/main/packages/google-cloud-language/CHANGELOG.md). * [Natural Language Node.js Client API Reference][client-docs] * [Natural Language Documentation][product-docs] * [github.com/googleapis/google-cloud-node/packages/google-cloud-language](https://github.com/googleapis/google-cloud-node/tree/main/packages/google-cloud-language) Read more about the client libraries for Cloud APIs, including the older Google APIs Client Libraries, in [Client Libraries Explained][explained]. [explained]: https://cloud.google.com/apis/docs/client-libraries-explained **Table of contents:** * [Quickstart](#quickstart) * [Before you begin](#before-you-begin) * [Installing the client library](#installing-the-client-library) * [Using the client library](#using-the-client-library) * [Samples](#samples) * [Versioning](#versioning) * [Contributing](#contributing) * [License](#license) ## Quickstart ### Before you begin 1. [Select or create a Cloud Platform project][projects]. 1. [Enable billing for your project][billing]. 1. [Enable the Natural Language API][enable_api]. 1. [Set up authentication with a service account][auth] so you can access the API from your local workstation. ### Installing the client library ```bash npm install @google-cloud/language ``` ### Using the client library ```javascript async function quickstart() { // Imports the Google Cloud client library const language = require('@google-cloud/language'); // Instantiates a client const client = new language.LanguageServiceClient(); // The text to analyze const text = 'Hello, world!'; const document = { content: text, type: 'PLAIN_TEXT', }; // Detects the sentiment of the text const [result] = await client.analyzeSentiment({document: document}); const sentiment = result.documentSentiment; console.log(`Text: ${text}`); console.log(`Sentiment score: ${sentiment.score}`); console.log(`Sentiment magnitude: ${sentiment.magnitude}`); } ``` ## Samples Samples are in the [`samples/`](https://github.com/googleapis/google-cloud-node/tree/main/packages/google-cloud-language/samples) directory. Each sample's `README.md` has instructions for running its sample. | Sample | Source Code | Try it | | --------------------------- | --------------------------------- | ------ | | Language_service.analyze_entities | [source code](https://github.com/googleapis/google-cloud-node/blob/main/packages/google-cloud-language/samples/generated/v1/language_service.analyze_entities.js) | [![Open in Cloud Shell][shell_img]](https://console.cloud.google.com/cloudshell/open?git_repo=https://github.com/googleapis/google-cloud-node&page=editor&open_in_editor=packages/google-cloud-language/samples/generated/v1/language_service.analyze_entities.js,packages/google-cloud-language/samples/README.md) | | Language_service.analyze_entity_sentiment | [source code](https://github.com/googleapis/google-cloud-node/blob/main/packages/google-cloud-language/samples/generated/v1/language_service.analyze_entity_sentiment.js) | [![Open in Cloud Shell][shell_img]](https://console.cloud.google.com/cloudshell/open?git_repo=https://github.com/googleapis/google-cloud-node&page=editor&open_in_editor=packages/google-cloud-language/samples/generated/v1/language_service.analyze_entity_sentiment.js,packages/google-cloud-language/samples/README.md) | | Language_service.analyze_sentiment | [source code](https://github.com/googleapis/google-cloud-node/blob/main/packages/google-cloud-language/samples/generated/v1/language_service.analyze_sentiment.js) | [![Open in Cloud Shell][shell_img]](https://console.cloud.google.com/cloudshell/open?git_repo=https://github.com/googleapis/google-cloud-node&page=editor&open_in_editor=packages/google-cloud-language/samples/generated/v1/language_service.analyze_sentiment.js,packages/google-cloud-language/samples/README.md) | | Language_service.analyze_syntax | [source code](https://github.com/googleapis/google-cloud-node/blob/main/packages/google-cloud-language/samples/generated/v1/language_service.analyze_syntax.js) | [![Open in Cloud Shell][shell_img]](https://console.cloud.google.com/cloudshell/open?git_repo=https://github.com/googleapis/google-cloud-node&page=editor&open_in_editor=packages/google-cloud-language/samples/generated/v1/language_service.analyze_syntax.js,packages/google-cloud-language/samples/README.md) | | Language_service.annotate_text | [source code](https://github.com/googleapis/google-cloud-node/blob/main/packages/google-cloud-language/samples/generated/v1/language_service.annotate_text.js) | [![Open in Cloud Shell][shell_img]](https://console.cloud.google.com/cloudshell/open?git_repo=https://github.com/googleapis/google-cloud-node&page=editor&open_in_editor=packages/google-cloud-language/samples/generated/v1/language_service.annotate_text.js,packages/google-cloud-language/samples/README.md) | | Language_service.classify_text | [source code](https://github.com/googleapis/google-cloud-node/blob/main/packages/google-cloud-language/samples/generated/v1/language_service.classify_text.js) | [![Open in Cloud Shell][shell_img]](https://console.cloud.google.com/cloudshell/open?git_repo=https://github.com/googleapis/google-cloud-node&page=editor&open_in_editor=packages/google-cloud-language/samples/generated/v1/language_service.classify_text.js,packages/google-cloud-language/samples/README.md) | | Language_service.moderate_text | [source code](https://github.com/googleapis/google-cloud-node/blob/main/packages/google-cloud-language/samples/generated/v1/language_service.moderate_text.js) | [![Open in Cloud Shell][shell_img]](https://console.cloud.google.com/cloudshell/open?git_repo=https://github.com/googleapis/google-cloud-node&page=editor&open_in_editor=packages/google-cloud-language/samples/generated/v1/language_service.moderate_text.js,packages/google-cloud-language/samples/README.md) | | Language_service.analyze_entities | [source code](https://github.com/googleapis/google-cloud-node/blob/main/packages/google-cloud-language/samples/generated/v1beta2/language_service.analyze_entities.js) | [![Open in Cloud Shell][shell_img]](https://console.cloud.google.com/cloudshell/open?git_repo=https://github.com/googleapis/google-cloud-node&page=editor&open_in_editor=packages/google-cloud-language/samples/generated/v1beta2/language_service.analyze_entities.js,packages/google-cloud-language/samples/README.md) | | Language_service.analyze_entity_sentiment | [source code](https://github.com/googleapis/google-cloud-node/blob/main/packages/google-cloud-language/samples/generated/v1beta2/language_service.analyze_entity_sentiment.js) | [![Open in Cloud Shell][shell_img]](https://console.cloud.google.com/cloudshell/open?git_repo=https://github.com/googleapis/google-cloud-node&page=editor&open_in_editor=packages/google-cloud-language/samples/generated/v1beta2/language_service.analyze_entity_sentiment.js,packages/google-cloud-language/samples/README.md) | | Language_service.analyze_sentiment | [source code](https://github.com/googleapis/google-cloud-node/blob/main/packages/google-cloud-language/samples/generated/v1beta2/language_service.analyze_sentiment.js) | [![Open in Cloud Shell][shell_img]](https://console.cloud.google.com/cloudshell/open?git_repo=https://github.com/googleapis/google-cloud-node&page=editor&open_in_editor=packages/google-cloud-language/samples/generated/v1beta2/language_service.analyze_sentiment.js,packages/google-cloud-language/samples/README.md) | | Language_service.analyze_syntax | [source code](https://github.com/googleapis/google-cloud-node/blob/main/packages/google-cloud-language/samples/generated/v1beta2/language_service.analyze_syntax.js) | [![Open in Cloud Shell][shell_img]](https://console.cloud.google.com/cloudshell/open?git_repo=https://github.com/googleapis/google-cloud-node&page=editor&open_in_editor=packages/google-cloud-language/samples/generated/v1beta2/language_service.analyze_syntax.js,packages/google-cloud-language/samples/README.md) | | Language_service.annotate_text | [source code](https://github.com/googleapis/google-cloud-node/blob/main/packages/google-cloud-language/samples/generated/v1beta2/language_service.annotate_text.js) | [![Open in Cloud Shell][shell_img]](https://console.cloud.google.com/cloudshell/open?git_repo=https://github.com/googleapis/google-cloud-node&page=editor&open_in_editor=packages/google-cloud-language/samples/generated/v1beta2/language_service.annotate_text.js,packages/google-cloud-language/samples/README.md) | | Language_service.classify_text | [source code](https://github.com/googleapis/google-cloud-node/blob/main/packages/google-cloud-language/samples/generated/v1beta2/language_service.classify_text.js) | [![Open in Cloud Shell][shell_img]](https://console.cloud.google.com/cloudshell/open?git_repo=https://github.com/googleapis/google-cloud-node&page=editor&open_in_editor=packages/google-cloud-language/samples/generated/v1beta2/language_service.classify_text.js,packages/google-cloud-language/samples/README.md) | | Language_service.moderate_text | [source code](https://github.com/googleapis/google-cloud-node/blob/main/packages/google-cloud-language/samples/generated/v1beta2/language_service.moderate_text.js) | [![Open in Cloud Shell][shell_img]](https://console.cloud.google.com/cloudshell/open?git_repo=https://github.com/googleapis/google-cloud-node&page=editor&open_in_editor=packages/google-cloud-language/samples/generated/v1beta2/language_service.moderate_text.js,packages/google-cloud-language/samples/README.md) | | Language_service.analyze_entities | [source code](https://github.com/googleapis/google-cloud-node/blob/main/packages/google-cloud-language/samples/generated/v2/language_service.analyze_entities.js) | [![Open in Cloud Shell][shell_img]](https://console.cloud.google.com/cloudshell/open?git_repo=https://github.com/googleapis/google-cloud-node&page=editor&open_in_editor=packages/google-cloud-language/samples/generated/v2/language_service.analyze_entities.js,packages/google-cloud-language/samples/README.md) | | Language_service.analyze_sentiment | [source code](https://github.com/googleapis/google-cloud-node/blob/main/packages/google-cloud-language/samples/generated/v2/language_service.analyze_sentiment.js) | [![Open in Cloud Shell][shell_img]](https://console.cloud.google.com/cloudshell/open?git_repo=https://github.com/googleapis/google-cloud-node&page=editor&open_in_editor=packages/google-cloud-language/samples/generated/v2/language_service.analyze_sentiment.js,packages/google-cloud-language/samples/README.md) | | Language_service.annotate_text | [source code](https://github.com/googleapis/google-cloud-node/blob/main/packages/google-cloud-language/samples/generated/v2/language_service.annotate_text.js) | [![Open in Cloud Shell][shell_img]](https://console.cloud.google.com/cloudshell/open?git_repo=https://github.com/googleapis/google-cloud-node&page=editor&open_in_editor=packages/google-cloud-language/samples/generated/v2/language_service.annotate_text.js,packages/google-cloud-language/samples/README.md) | | Language_service.classify_text | [source code](https://github.com/googleapis/google-cloud-node/blob/main/packages/google-cloud-language/samples/generated/v2/language_service.classify_text.js) | [![Open in Cloud Shell][shell_img]](https://console.cloud.google.com/cloudshell/open?git_repo=https://github.com/googleapis/google-cloud-node&page=editor&open_in_editor=packages/google-cloud-language/samples/generated/v2/language_service.classify_text.js,packages/google-cloud-language/samples/README.md) | | Language_service.moderate_text | [source code](https://github.com/googleapis/google-cloud-node/blob/main/packages/google-cloud-language/samples/generated/v2/language_service.moderate_text.js) | [![Open in Cloud Shell][shell_img]](https://console.cloud.google.com/cloudshell/open?git_repo=https://github.com/googleapis/google-cloud-node&page=editor&open_in_editor=packages/google-cloud-language/samples/generated/v2/language_service.moderate_text.js,packages/google-cloud-language/samples/README.md) | | Quickstart | [source code](https://github.com/googleapis/google-cloud-node/blob/main/packages/google-cloud-language/samples/quickstart.js) | [![Open in Cloud Shell][shell_img]](https://console.cloud.google.com/cloudshell/open?git_repo=https://github.com/googleapis/google-cloud-node&page=editor&open_in_editor=packages/google-cloud-language/samples/quickstart.js,packages/google-cloud-language/samples/README.md) | The [Natural Language Node.js Client API Reference][client-docs] documentation also contains samples. ## Supported Node.js Versions Our client libraries follow the [Node.js release schedule](https://github.com/nodejs/release#release-schedule). Libraries are compatible with all current _active_ and _maintenance_ versions of Node.js. If you are using an end-of-life version of Node.js, we recommend that you update as soon as possible to an actively supported LTS version. Google's client libraries support legacy versions of Node.js runtimes on a best-efforts basis with the following warnings: * Legacy versions are not tested in continuous integration. * Some security patches and features cannot be backported. * Dependencies cannot be kept up-to-date. Client libraries targeting some end-of-life versions of Node.js are available, and can be installed through npm [dist-tags](https://docs.npmjs.com/cli/dist-tag). The dist-tags follow the naming convention `legacy-(version)`. For example, `npm install @google-cloud/language@legacy-8` installs client libraries for versions compatible with Node.js 8. ## Versioning This library follows [Semantic Versioning](http://semver.org/). This library is considered to be **stable**. The code surface will not change in backwards-incompatible ways unless absolutely necessary (e.g. because of critical security issues) or with an extensive deprecation period. Issues and requests against **stable** libraries are addressed with the highest priority. More Information: [Google Cloud Platform Launch Stages][launch_stages] [launch_stages]: https://cloud.google.com/terms/launch-stages ## Contributing Contributions welcome! See the [Contributing Guide](https://github.com/googleapis/google-cloud-node/blob/main/CONTRIBUTING.md). Please note that this `README.md`, the `samples/README.md`, and a variety of configuration files in this repository (including `.nycrc` and `tsconfig.json`) are generated from a central template. To edit one of these files, make an edit to its templates in [directory](https://github.com/googleapis/synthtool). ## License Apache Version 2.0 See [LICENSE](https://github.com/googleapis/google-cloud-node/blob/main/LICENSE) [client-docs]: https://cloud.google.com/nodejs/docs/reference/language/latest [product-docs]: https://cloud.google.com/natural-language/docs/ [shell_img]: https://gstatic.com/cloudssh/images/open-btn.png [projects]: https://console.cloud.google.com/project [billing]: https://support.google.com/cloud/answer/6293499#enable-billing [enable_api]: https://console.cloud.google.com/flows/enableapi?apiid=language.googleapis.com [auth]: https://cloud.google.com/docs/authentication/getting-started