gulpfile.js

const gulp = require('gulp')
const jsdoc2md = require('jsdoc-to-markdown')
const fs = require('fs')
const path = require('path')

gulp.task('docs', () => {
    /* input and output paths */
    const inputFile = 'src/**/*.js'
    const outputDir = `${__dirname}/docs`

    /* get template data */
    const templateData = jsdoc2md.getTemplateDataSync({ files: inputFile })

    /* reduce templateData to an array of class names */
    const classNames = templateData.reduce((classNames, identifier) => {
      if (identifier.kind === 'class') classNames.push(identifier.name)
      return classNames
    }, [])

    /* create a documentation file for each class */
    for (const className of classNames) {
      const template = `{{#class name="${className}"}}{{>docs}}{{/class}}`
      console.log(`rendering ${className}, template: ${template}`)
      const output = jsdoc2md.renderSync({ data: templateData, template: template })
      fs.writeFileSync(path.resolve(outputDir, `${className}.md`), output)
    }
})