convex/dist/esm/values/size.js

Client for the Convex Cloud

"use strict";
import { isSimpleObject } from "../common/index.js";
export function getConvexSize(value) {
  if (value === void 0) {
    return 0;
  }
  if (value === null) {
    return 1;
  }
  if (typeof value === "boolean") {
    return 1;
  }
  if (typeof value === "bigint") {
    return 9;
  }
  if (typeof value === "number") {
    return 9;
  }
  if (typeof value === "string") {
    return 2 + getUtf8ByteLength(value);
  }
  if (value instanceof ArrayBuffer) {
    return 2 + value.byteLength;
  }
  if (Array.isArray(value)) {
    let size = 2;
    for (const element of value) {
      size += getConvexSize(element);
    }
    return size;
  }
  if (isSimpleObject(value)) {
    let size = 2;
    for (const [key, val] of Object.entries(value)) {
      if (val !== void 0) {
        size += getUtf8ByteLength(key) + 1 + getConvexSize(val);
      }
    }
    return size;
  }
  throw new Error(`Unsupported value type: ${typeof value}`);
}
const UTF8_LENGTH_THRESHOLD = 500;
function getUtf8ByteLength(str) {
  if (str.length > UTF8_LENGTH_THRESHOLD) {
    return new TextEncoder().encode(str).length;
  }
  let bytes = 0;
  for (let i = 0; i < str.length; i++) {
    const code = str.charCodeAt(i);
    if (code < 128) {
      bytes += 1;
    } else if (code < 2048) {
      bytes += 2;
    } else if (code >= 55296 && code <= 56319) {
      bytes += 4;
      i++;
    } else {
      bytes += 3;
    }
  }
  return bytes;
}
export const SYSTEM_FIELD_ID_ESTIMATE = 38;
export const SYSTEM_FIELD_CREATION_TIME_SIZE = 23;
export function getDocumentSize(value, options) {
  const baseSize = getConvexSize(value);
  const hasId = "_id" in value && value["_id"] !== void 0;
  const hasCreationTime = "_creationTime" in value && value["_creationTime"] !== void 0;
  if (hasId && hasCreationTime) {
    return baseSize;
  }
  let additionalSize = 0;
  if (!hasId) {
    if (options?.customIdLength) {
      additionalSize += options.customIdLength + 6;
    } else {
      additionalSize += SYSTEM_FIELD_ID_ESTIMATE;
    }
  }
  if (!hasCreationTime) {
    additionalSize += SYSTEM_FIELD_CREATION_TIME_SIZE;
  }
  return baseSize + additionalSize;
}
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