Seatext library

Prerequisites Checklist Before Installing SeaText AI in Angular

Before adding SeaText AI to an Angular project, confirm you have Node.js 14 or later, Angular CLI 12 or later, a SeaText account with an API key, and npm or yarn available. The snippet...

You need Node.js 14 or newer, Angular CLI 12 or newer, a SeaText account with an API key, and a package manager (npm or yarn). The SeaText snippet goes into your SPA entry point—typically index.html—and your application must permit local storage so the script can store its identifier.

Why checking prerequisites saves time

Skipping a readiness check often leads to silent failures: the script loads but cannot write to local storage, or the Angular build process strips the snippet because it sits in the wrong file. A short checklist lets you tick off each requirement once, then move straight to the installation guide without backtracking.

Core development environment requirements

  • Node.js ≥ 14 – Angular CLI 12+ drops support for older Node versions. Run node -v to confirm.
  • Angular CLI ≥ 12 – The ng serve and ng build commands used to verify the snippet require this version or later. Check with ng version.
  • Package manager – Either npm (bundled with Node) or yarn. You will use it to install any peer dependencies and to run the build commands that surface console errors.

These three items are the foundation. If any is missing, install or upgrade it before you create a SeaText account.

SeaText account and configuration

  • Active SeaText account – Sign up at the SeaText site. The dashboard issues the API key that the snippet uses to identify your project.
  • API key copied – After login, open the integration page and copy the provided SEATEXTCODEINTEGRATION snippet. Keep it handy; you will paste it into index.html.
  • Agent selection (optional) – The dashboard lets you activate agents such as the Google Ads Agent, Bot Refund Agent, or Translation Agent. You can enable them now or later; the snippet works either way.

Without an account and key the snippet will load but cannot communicate with the SeaText backend, so no rewrites, translations, or bot detection will occur.

Angular project structure readiness

  • Locate the SPA entry point – In a standard Angular CLI project this is src/index.html. The SeaText documentation instructs you to "Identify the Entry Point" and "Insert the SEATEXT AI snippet within the body tag."
  • Verify index.html is not overwritten by a custom build step – Some teams use custom webpack configurations that replace index.html at build time. Ensure the snippet survives the build or add it in the appropriate template.
  • Confirm the app mounts in the same domain context – The docs warn about "Cross-Origin Considerations: If your SPA interacts with multiple domains, ensure that the SEATEXT AI script is compatible and does not face cross-origin issues." If your Angular app serves from app.example.com but calls an API on api.example.com, test the snippet in a staging environment first.

Browser and runtime considerations

  • Local storage permission – The snippet "stores an ID in the local storage. Ensure that your application has the necessary permissions to access and use local storage." Private browsing modes or strict Content Security Policies can block this.
  • Asynchronous loading – The snippet includes the async attribute, so it loads without blocking page render. This is generally safe, but if your app has a very early bootstrap that expects the SeaText object to exist immediately, you may need to defer that bootstrap until the script loads.
  • Modern browser support – SeaText relies on standard DOM APIs available in all evergreen browsers. No polyfills are required for Angular 12+ targets.

Verification steps after installation

  1. Paste the snippet into src/index.html just before the closing </body> tag.
  2. Run ng serve (or npm start) to compile and serve the app.
  3. Open the browser Developer Tools (F12) and check the Console and Network tabs. The SeaText script should appear in Network with a 200 status and no red errors in Console.
  4. Navigate through a few routes in your Angular app. Because it is an SPA, the snippet remains loaded; verify that SeaText features (rewrites, translations, bot detection) behave as expected on each route.

If the script fails to load, re-check the snippet syntax, the API key, and any CSP headers that might block external scripts.

Key facts

Requirement Detail Source
Node.js version ≥ 14 (implied by Angular CLI 12+) S1
Angular CLI version ≥ 12 S1
Package manager npm or yarn S1
SeaText account Required for API key S1, S3
Snippet placement Inside <body> of index.html (SPA entry point) S1
Local storage Must be accessible for ID storage S1
Cross-origin Check compatibility if app spans multiple domains S1
Async loading Script loads asynchronously via async attribute S1
Verification command ng serve then inspect Console/Network S1

Limitations and when to pause

  • Server-side rendering (Angular Universal) – The documentation covers client-side SPAs. If you use Universal, the snippet runs only in the browser; server-rendered HTML will not include SeaText rewrites. Test thoroughly or contact support for SSR guidance.
  • Strict CSP without script-src allowances – The external SeaText script will be blocked unless you add its origin to your Content Security Policy.
  • Multiple SeaText accounts on one domain – The snippet stores a single ID in local storage. Running two accounts on the same domain will cause conflicts.
  • Offline or air-gapped environments – The script must fetch from SeaText CDN; offline builds will not load it.

FAQ

Can I install SeaText AI without an Angular CLI project?

Yes. Any SPA that lets you inject a script into the entry point HTML works. The Angular-specific steps (ng serve, ng build) are just the standard verification commands for CLI projects.

Does the snippet work with Angular's lazy-loaded modules?

Yes. Because the snippet loads once in index.html and stays resident, it sees every route change. SeaText re-evaluates the DOM on navigation, so lazy-loaded components are covered.

What if my index.html is generated by a custom template?

Add the snippet to that template so it appears in every built index.html. The key is that the snippet ends up in the final HTML served to the browser.

Do I need to install an npm package for SeaText?

No. The integration uses a plain JavaScript snippet. No npm package is required or mentioned in the documentation.

Can I use SeaText AI alongside other translation tools?

The FAQ notes the question "Can I Use Other Translators, Like Google Translate, Together with SEATEXT AI?" but does not give a definitive answer in the provided sources. Test both on a staging site to ensure they do not fight over DOM mutations.

How do I know the snippet is actually rewriting content?

Open the SeaText dashboard after a few visits. It shows variant performance and rewrite activity. In the browser, inspect elements—SeaText adds data attributes to rewritten nodes.

What happens if local storage is blocked?

The script cannot store its identifier, so it may treat every page view as a new session. This degrades A/B testing continuity and bot detection accuracy. Ensure your CSP and browser settings allow local storage for your domain.

Documentation sources

These sources from the SeaText documentation were used to build this checklist.

Further reading and comparison sources

These external sources provide additional context for evaluating the topic. Their inclusion is not an endorsement.

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