Function data2TypeInfo

javascript/benchmark/index.js:32–91

(
  data,
  typeName,
)

export const data2TypeInfo = (
  data,
  typeName,
) => {
  if (data === null || data === undefined) {
    return null;
  }
  if (Array.isArray(data)) {
    const item = data2TypeInfo(data[0], typeName);
    if (!item) {
      throw new Error("empty array can't convert");
    }
    return Type.list(item);
  }
  if (data instanceof Date) {
    return Type.timestamp();
  }
  if (typeof data === "string") {
    return Type.string();
  }
  if (data instanceof Set) {
    return Type.set(data2TypeInfo([...data.values()][0], typeName));
  }
  if (data instanceof Map) {
    return Type.map(
      data2TypeInfo([...data.keys()][0], typeName),
      data2TypeInfo([...data.values()][0], typeName),
    );
  }
  if (typeof data === "boolean") {
    return Type.bool();
  }
  if (typeof data === "number") {
    if (data > Number.MAX_SAFE_INTEGER || data < Number.MIN_SAFE_INTEGER) {
      return Type.int64();
    }
    return Type.int32();
  }

  if (typeof data === "object") {
    if (isUint8Array(data)) {
      return Type.binary();
    }

    return Type.struct(
      {
        typeName
      },
      Object.fromEntries(
        Object.entries(data)
          .map(([key, value]) => {
            return [key, data2TypeInfo(value, `${typeName}.${key}`)];
          })
          .filter(([, v]) => Boolean(v)),
      ),
    );
  }