API Reference

Package Exports

@snap-fill/core provides two entry points:

Main Entry (@snap-fill/core)

Functions for direct use in a web page — tree-shakeable, no side effects:

• Form Detection — scanForFields, classifyByAutocomplete, classifyByRegex
• Form Filling — fillForm, fillElement
• Cart Detection — detectCart, extractFromJsonLd, etc.
• Types — AutofillFieldType, AutofillMappings, AutofillMessage, etc.
• Constants — AUTOCOMPLETE_MAP, REGEX_PATTERNS, TYPE_MAP

Injectable Entry (@snap-fill/core/injectable)

Pre-built script strings for WebView injection:

• Injectable Scripts — snapfillScript, buildFillScript, fillScriptTemplate

Usage Patterns

Pattern 1: WebView Injection

Use the injectable entry to inject scripts into a WebView and communicate via messages. Best for native apps (React Native, Android, iOS).

import { snapfillScript, buildFillScript } from '@snap-fill/core/injectable';

Pattern 2: Direct Web Use

Use the main entry for direct DOM access in a web page or browser extension. Functions are tree-shakeable.

import { scanForFields, fillForm } from '@snap-fill/core';