stitch-ui/src/models/JSONState.js

import JSON5 from "json5";
import { Record } from "immutable";
import { toJSON } from "../util";

export default class JSONState extends Record({
  dirty: false,
  input: "",
  error: null,
  data: undefined
}) {
  static fromRaw(raw, defaultInputVal) {
    let out = new JSONState({
      dirty: false,
      input: toJSON(raw),
      error: null,
      data: raw
    });
    if (!out.input) {
      out = out.set("input", toJSON(defaultInputVal));
    }
    return out;
  }

  discardChanges(defaultInputVal) {
    return JSONState.fromRaw(this.data, defaultInputVal);
  }

  parseInput() {
    try {
      const parsedRaw = JSON5.parse(this.input);
      return this.set("input", toJSON(parsedRaw))
        .set("error", null)
        .set("data", parsedRaw);
    } catch (err) {
      return this.set("error", "Invalid JSON");
    }
  }
}