Node API

flowfig/svg needs no React and no browser.

import { readFileSync, writeFileSync } from 'node:fs';
import { check, toSvg } from 'flowfig/svg';

const spec = JSON.parse(readFileSync('first.json', 'utf8'));
for (const f of check(spec)) console.log(f.severity, f.rule, f.message);
writeFileSync('first.svg', toSvg(spec));

• toSvg(spec, options) returns the SVG string. The options are speed, padding (default 24) and theme.
• check(spec, options) returns the findings. It also takes width and minText.
• render(spec, options) returns { svg, scene }. The scene is the layout that the check reads. Its shape can change.

flowfig/verify is for Node only. It exports verify, verifyReport (the findings and the counts), links, owners and parseSource, the same checks as flowfig verify.

toSvg does not put the spec in the SVG. Only the CLI adds the spec, which --spec reads back.