Method load

src/LGraph.ts:1902–1935

(url: string | Blob | URL | File, callback: () => void)

  }

  load(url: string | Blob | URL | File, callback: () => void) {
    const that = this

    // from file
    if (url instanceof Blob || url instanceof File) {
      const reader = new FileReader()
      reader.addEventListener("load", function (event) {
        const result = stringOrEmpty(event.target?.result)
        const data = JSON.parse(result)
        that.configure(data)
        callback?.()
      })

      reader.readAsText(url)
      return
    }

    // is a string, then an URL
    const req = new XMLHttpRequest()
    req.open("GET", url, true)
    req.send(null)
    req.addEventListener("load", function () {
      if (req.status !== 200) {
        console.error("Error loading graph:", req.status, req.response)
        return
      }
      const data = JSON.parse(req.response)
      that.configure(data)
      callback?.()
    })
    req.addEventListener("error", (err) => {
      console.error("Error loading graph:", err)
    })
  }
}