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@jayson991/svg2font

v1.0.0

Published

Generate icon fonts from SVG files — TypeScript/WASM library

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Readme

@jayson991/svg2font

Generate icon fonts from SVG files — TypeScript/WASM library

npm version License: MIT Node.js Version

A WebAssembly module wrapping the same Rust core as the CLI. Provides full TypeScript types and async/await support. Zero JavaScript font dependencies — all font generation happens in Rust compiled to WASM.

For the CLI tool, see @jayson991/svg2font-cli.

Requirements

  • Node.js 18 or higher

Installation

npm install @jayson991/svg2font

# Or with pnpm
pnpm add @jayson991/svg2font

# Or with yarn
yarn add @jayson991/svg2font

Quick Start

import { generate } from '@jayson991/svg2font';

const result = await generate({
  src: 'icons/**/*.svg',
  dist: 'dist',
  fontName: 'myicons',
});

console.log(`Generated ${result.glyphs.length} icons`);
console.log(`Bundle: ${result.zipPath}`);

API

generate(options): Promise<GenerateResult>

export function generate(options: GenerateOptions): Promise<GenerateResult>;

GenerateOptions

| Field | Type | Required | Default | Description | |-------|------|----------|---------|-------------| | src | string | Yes | — | Glob pattern for source SVG files (e.g. "icons/**/*.svg") | | dist | string | Yes | — | Output directory | | fontName | string | Yes | — | Font family name used in file names and CSS | | prefix | string | No | "icon" | CSS class prefix | | startCodepoint | number | No | 57345 (0xe001) | Starting Unicode codepoint |

GenerateResult

| Field | Type | Description | |-------|------|-------------| | glyphs | GlyphMeta[] | Metadata for every generated icon | | zipPath | string | Absolute path to the generated ZIP archive |

GlyphMeta

| Field | Type | Description | |-------|------|-------------| | name | string | Icon name in kebab-case (e.g. "arrow-right") | | codepoint | number | Assigned Unicode codepoint (e.g. 57345) | | unicode | string | HTML entity (e.g. "&#xe001;") | | className | string | Full CSS class name (e.g. "icon-arrow-right") |

Examples

Basic usage

import { generate } from '@jayson991/svg2font';

const result = await generate({
  src: 'src/assets/icons/**/*.svg',
  dist: 'public/fonts',
  fontName: 'myicons',
  prefix: 'icon',
});

for (const glyph of result.glyphs) {
  console.log(`${glyph.className}  →  ${glyph.unicode}`);
}

Custom codepoint range

import { generate } from '@jayson991/svg2font';
import { writeFileSync } from 'fs';

const result = await generate({
  src: 'icons/**/*.svg',
  dist: 'dist',
  fontName: 'design-system',
  prefix: 'ds',
  startCodepoint: 0xf000,
});

// Write a custom mapping file
const mapping = Object.fromEntries(
  result.glyphs.map(g => [g.name, { unicode: g.unicode, className: g.className }])
);
writeFileSync('icon-map.json', JSON.stringify(mapping, null, 2));

Build script integration

// scripts/build-icons.ts
import { generate } from '@jayson991/svg2font';

async function main() {
  const result = await generate({
    src: 'design/icons/**/*.svg',
    dist: 'src/assets/fonts',
    fontName: 'app-icons',
    prefix: 'icon',
  });
  console.log(`Built ${result.glyphs.length} icons → ${result.zipPath}`);
}

main().catch(console.error);

Output

The dist/{fontName}/ directory is created containing:

  • {name}.ttf — TrueType font
  • {name}.woff — WOFF (zlib)
  • {name}.woff2 — WOFF2 (brotli)
  • {name}.eot — EOT (IE11)
  • {name}.svg — SVG font
  • {name}.css — Stylesheet with @font-face
  • {name}.js — SVG sprite auto-injector
  • {name}.symbol.svg — SVG sprite
  • {name}.json — Glyph metadata
  • demo.html / demo.css — Interactive preview

A ZIP archive is also written at {dist}/{fontName}.zip.

License

MIT © Jayson Wu