@discoveryjs/discovery/lib/core/utils/json.js

Frontend framework for rapid data (JSON) analysis, shareable serverless reports and dashboards

import { objectToString } from "./object-utils.js";
export { stringifyInfo as jsonStringifyInfo } from "@discoveryjs/json-ext";
function prettyFn(fn, ws, property) {
  const src = String(fn);
  const [prefix, name] = src.match(/^(?:\S+\s+)?(\S+)\(/) || [];
  if (prefix !== "function" && prefix !== "function*" && name === property.trim().slice(0, -1)) {
    property = "";
  }
  if (src.indexOf("\n") === -1) {
    return property + src;
  }
  const lines = src.split(/\n/);
  const minOffset = lines[lines.length - 1].match(/^\s*/)?.[0].length || 0;
  const stripOffset = new RegExp("^\\s{0," + minOffset + "}");
  return property + lines.map((line, idx) => idx && line.length ? line.replace(stripOffset, ws) : line).join("\n");
}
function restoreValue(value, ws, property) {
  if (typeof value === "function") {
    return prettyFn(value, ws, property);
  }
  if (value instanceof Date) {
    return `${property}new Date("${value.toISOString()}")`;
  }
  if (Array.isArray(value)) {
    return `${property}[${value.join(", ")}]`;
  }
  return property + String(value);
}
const specialValueTypes = /* @__PURE__ */ new Set([
  "[object Function]",
  "[object RegExp]",
  "[object Date]"
]);
function isNumericArray(value) {
  return Array.isArray(value) && value.every((el) => typeof el === "number");
}
export function jsonStringifyAsJavaScript(value, replacer, space = 4) {
  const specials = [];
  const jsReplacer = function(key, value2) {
    if (typeof value2 === "string" && objectToString(this[key]) === "[object Date]") {
      value2 = this[key];
    }
    if (value2 !== null && (specialValueTypes.has(objectToString(value2)) || isNumericArray(value2))) {
      specials.push(value2);
      return "{{{__placeholder__}}}";
    }
    return value2;
  };
  return String(JSON.stringify(value, replacer || jsReplacer, space)).replace(
    /"((?:\\.|[^"])*)"(:?)/g,
    (_, content, colon) => colon && /^[a-z$_][a-z$_\d]*$/i.test(content) ? content + colon : `'${content.replace(/\\"/g, '"').replace(/'/g, "\\'")}'` + colon
  ).replace(
    /(^|\n)([ \t]*)(.*?)([a-zA-Z$_][a-zA-Z0-9$_]+:\s*)?'{{{__placeholder__}}}'/g,
    (_, rn, ws, any, property) => rn + ws + any + restoreValue(specials.shift(), ws, property)
  );
}