31 lines
1.1 KiB
JavaScript
31 lines
1.1 KiB
JavaScript
/* IMPORT */
|
|
import decode from 'decode-base64';
|
|
import once from 'function-once';
|
|
import wrapper from '../graphviz/wrapper.js';
|
|
import { DEFAULT_ENGINE, DEFAULT_FORMAT } from './constants.js';
|
|
/* MAIN */
|
|
const generate = (GRAPHVIZ_BASE64) => {
|
|
const Graphviz = {
|
|
/* LIFECYCLE API */
|
|
loadWASM: once(async () => {
|
|
const GRAPHVIZ_BUFFER = decode(GRAPHVIZ_BASE64);
|
|
const instance = await wrapper({ wasmBinary: GRAPHVIZ_BUFFER });
|
|
Graphviz.layout = (source, format = DEFAULT_FORMAT, engine = DEFAULT_ENGINE) => {
|
|
const graphviz = new instance.Graphviz();
|
|
const result = graphviz.layout(source, format, engine);
|
|
instance.destroy(graphviz);
|
|
if (!result)
|
|
throw new Error(instance.Graphviz.prototype.lastError());
|
|
return result;
|
|
};
|
|
}),
|
|
/* API */
|
|
layout: (source, format = DEFAULT_FORMAT, engine = DEFAULT_ENGINE) => {
|
|
throw new Error('[graphviz] You need to call and await "graphviz.loadWASM" first');
|
|
}
|
|
};
|
|
return Graphviz;
|
|
};
|
|
/* EXPORT */
|
|
export default generate;
|