JSON.isRawJSON()

Baseline 2025

Newly available

Since March 2025, this feature works across the latest devices and browser versions. This feature might not work in older devices or browsers.

JSON.isRawJSON() ã¯éçã¡ã½ããã§ãããå¤ã JSON.rawJSON() ããè¿ããããªãã¸ã§ã¯ãã§ãããã©ãããæ¤æ»ãã¾ãã

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JSON.isRawJSON(value)

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value ã JSON.rawJSON() ã§ä½æããããã®ã§ããã° true ã§ããããã§ãªããã° false ã§ãã

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JSON.isRawJSON() ã®ä½¿ç¨

function mySerializer(value, indent = "") {
  if (typeof value !== "object" || value === null) {
    return JSON.stringify(value);
  }
  if (JSON.isRawJSON(value)) {
    return value.rawJSON;
  }
  const subIndent = `${indent}  `;
  if (Array.isArray(value)) {
    return `- ${value.map((v) => mySerializer(v, subIndent)).join(`\n${indent}- `)}`;
  }
  return Object.entries(value)
    .map(([key, value]) => {
      const subValue = mySerializer(value, subIndent);
      if (subValue.includes("\n")) {
        return `${key}:\n${subIndent}${subValue}`;
      }
      return `${key}: ${subValue}`;
    })
    .join(`\n${indent}`);
}

console.log(
  mySerializer({
    name: "Josh",
    userId: JSON.rawJSON("12345678901234567890"),
    friends: [
      { name: "Alice", userId: JSON.rawJSON("9876543210987654321") },
      { name: "Bob", userId: JSON.rawJSON("56789012345678901234") },
    ],
  }),
);

// name: "Josh"
// userId: 12345678901234567890
// friends:
//   - name: "Alice"
//     userId: 9876543210987654321
//   - name: "Bob"
//     userId: 56789012345678901234

ãããã®ä¾ã§ userId ã®å¤ã JSON.rawJSON() ã§ä½æãããç´æ¥æ°å¤ã¨ãã¦æ¸¡ãã¦ããå ´åã JavaScript ã®æµ®åå°æ°ç¹æ°ã®å¶éã«ãããç²¾åº¦ãä½ä¸ãã¦ãã¾ãã¾ãã

console.log(
  mySerializer({
    name: "Josh",
    userId: 12345678901234567890,
    friends: [
      { name: "Alice", userId: 9876543210987654321 },
      { name: "Bob", userId: 56789012345678901234 },
    ],
  }),
);

// name: "Josh"
// userId: 12345678901234567000
// friends:
//   - name: "Alice"
//     userId: 9876543210987655000
//   - name: "Bob"
//     userId: 56789012345678900000