@plugjs/expect5/dist/expectation/types.mjs

Unit Testing for the PlugJS Build System ========================================

// expectation/types.ts
function typeOf(value) {
  if (value === null) return "null";
  const type = typeof value;
  switch (type) {
    case "bigint":
    case "boolean":
    case "function":
    case "number":
    case "string":
    case "symbol":
    case "undefined":
      return type;
  }
  if (Array.isArray(value)) return "array";
  if (value instanceof Promise) return "promise";
  if (typeof value["then"] === "function") return "promise";
  if (value instanceof Date) return "date";
  if (value instanceof Buffer) return "buffer";
  if (value instanceof RegExp) return "regexp";
  if (value instanceof Map) return "map";
  if (value instanceof Set) return "set";
  return "object";
}
function constructorName(value) {
  return Object.getPrototypeOf(value)?.constructor?.name;
}
function formatBinaryData(value, buffer) {
  const binary = buffer.length > 20 ? `${buffer.toString("hex", 0, 20)}\u2026, length=${value.length}` : buffer.toString("hex");
  return binary ? `[${constructorName(value)}: ${binary}]` : `[${constructorName(value)}: empty]`;
}
function stringifyObjectType(value) {
  const proto = Object.getPrototypeOf(value);
  if (!proto) return "[Object: null prototype]";
  return stringifyConstructor(proto.constructor);
}
function stringifyConstructor(ctor) {
  if (!ctor) return "[Object: no constructor]";
  if (!ctor.name) return "[Object: anonymous]";
  return `[${ctor.name}]`;
}
function stringifyValue(value) {
  if (value === null) return "<null>";
  if (value === void 0) return "<undefined>";
  switch (typeof value) {
    case "string":
      if (value.length > 40) value = `${value.substring(0, 40)}\u2026, length=${value.length}`;
      return JSON.stringify(value);
    case "number":
      if (value === Number.POSITIVE_INFINITY) return "+Infinity";
      if (value === Number.NEGATIVE_INFINITY) return "-Infinity";
      return String(value);
    case "boolean":
      return String(value);
    case "bigint":
      return `${value}n`;
    case "function":
      return value.name ? `<function ${value.name}>` : "<function>";
    case "symbol":
      return value.description ? `<symbol ${value.description}>` : "<symbol>";
  }
  if (value instanceof RegExp) return String(value);
  if (value instanceof Date) return `[${constructorName(value)}: ${isNaN(value.getTime()) ? "Invalid date" : value.toISOString()}]`;
  if (value instanceof Boolean) return `[${constructorName(value)}: ${value.valueOf()}]`;
  if (value instanceof Number) return `[${constructorName(value)}: ${stringifyValue(value.valueOf())}]`;
  if (value instanceof String) return `[${constructorName(value)}: ${stringifyValue(value.valueOf())}]`;
  if (Array.isArray(value)) return `[${constructorName(value)} (${value.length})]`;
  if (value instanceof Set) return `[${constructorName(value)} (${value.size})]`;
  if (value instanceof Map) return `[${constructorName(value)} (${value.size})]`;
  if (value instanceof Buffer) return formatBinaryData(value, value);
  if (value instanceof Uint8Array) return formatBinaryData(value, Buffer.from(value));
  if (value instanceof ArrayBuffer) return formatBinaryData(value, Buffer.from(value));
  if (value instanceof SharedArrayBuffer) return formatBinaryData(value, Buffer.from(value));
  return stringifyObjectType(value);
}
function prefixType(type) {
  switch (type) {
    case "bigint":
    case "boolean":
    case "buffer":
    case "date":
    case "function":
    case "map":
    case "number":
    case "promise":
    case "regexp":
    case "set":
    case "string":
    case "symbol":
      return `a <${type}>`;
    case "array":
    case "object":
      return `an <${type}>`;
    case "null":
    case "undefined":
      return `<${type}>`;
    default:
      return `of unknown type <${type}>`;
  }
}
var matcherMarker = Symbol.for("plugjs:expect5:types:Matcher");
function isMatcher(what) {
  return what && what[matcherMarker] === matcherMarker;
}
var ExpectationError = class extends Error {
  remarks;
  diff;
  /**
   * Create an {@link ExpectationError} from a {@link Expectations} instance
   * and details message, including an optional {@link Diff}
   */
  constructor(expectations, details, diff) {
    const { value } = expectations;
    let preamble = stringifyValue(value);
    if (expectations.parent) {
      const properties = [];
      while (expectations.parent) {
        properties.push(`[${stringifyValue(expectations.parent.prop)}]`);
        expectations = expectations.parent.expectations;
      }
      preamble = properties.reverse().join("");
      const type = typeof expectations.value === "object" ? stringifyObjectType(expectations.value) : (
        // parent values can not be null!
        stringifyValue(expectations.value)
      );
      preamble = `property ${preamble} of ${type} (${stringifyValue(value)})`;
    }
    super(`Expected ${preamble} ${details}`);
    if (expectations.remarks) this.remarks = expectations.remarks;
    if (diff) this.diff = diff;
  }
};
export {
  ExpectationError,
  isMatcher,
  matcherMarker,
  prefixType,
  stringifyConstructor,
  stringifyObjectType,
  stringifyValue,
  typeOf
};
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