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backend/node_modules/bson/src/int_32.ts

@@ -0,0 +1,101 @@
+import { BSONValue } from './bson_value';
+import { BSON_INT32_MAX, BSON_INT32_MIN } from './constants';
+import { BSONError } from './error';
+import type { EJSONOptions } from './extended_json';
+import { type InspectFn, defaultInspect } from './parser/utils';
+import { removeLeadingZerosAndExplicitPlus } from './utils/string_utils';
+
+/** @public */
+export interface Int32Extended {
+  $numberInt: string;
+}
+
+/**
+ * A class representation of a BSON Int32 type.
+ * @public
+ * @category BSONType
+ */
+export class Int32 extends BSONValue {
+  get _bsontype(): 'Int32' {
+    return 'Int32';
+  }
+
+  value!: number;
+  /**
+   * Create an Int32 type
+   *
+   * @param value - the number we want to represent as an int32.
+   */
+  constructor(value: number | string) {
+    super();
+    if ((value as unknown) instanceof Number) {
+      value = value.valueOf();
+    }
+
+    this.value = +value | 0;
+  }
+
+  /**
+   * Attempt to create an Int32 type from string.
+   *
+   * This method will throw a BSONError on any string input that is not representable as an Int32.
+   * Notably, this method will also throw on the following string formats:
+   * - Strings in non-decimal formats (exponent notation, binary, hex, or octal digits)
+   * - Strings non-numeric and non-leading sign characters (ex: '2.0', '24,000')
+   * - Strings with leading and/or trailing whitespace
+   *
+   * Strings with leading zeros, however, are allowed.
+   *
+   * @param value - the string we want to represent as an int32.
+   */
+  static fromString(value: string): Int32 {
+    const cleanedValue = removeLeadingZerosAndExplicitPlus(value);
+
+    const coercedValue = Number(value);
+
+    if (BSON_INT32_MAX < coercedValue) {
+      throw new BSONError(`Input: '${value}' is larger than the maximum value for Int32`);
+    } else if (BSON_INT32_MIN > coercedValue) {
+      throw new BSONError(`Input: '${value}' is smaller than the minimum value for Int32`);
+    } else if (!Number.isSafeInteger(coercedValue)) {
+      throw new BSONError(`Input: '${value}' is not a safe integer`);
+    } else if (coercedValue.toString() !== cleanedValue) {
+      // catch all case
+      throw new BSONError(`Input: '${value}' is not a valid Int32 string`);
+    }
+    return new Int32(coercedValue);
+  }
+
+  /**
+   * Access the number value.
+   *
+   * @returns returns the wrapped int32 number.
+   */
+  valueOf(): number {
+    return this.value;
+  }
+
+  toString(radix?: number): string {
+    return this.value.toString(radix);
+  }
+
+  toJSON(): number {
+    return this.value;
+  }
+
+  /** @internal */
+  toExtendedJSON(options?: EJSONOptions): number | Int32Extended {
+    if (options && (options.relaxed || options.legacy)) return this.value;
+    return { $numberInt: this.value.toString() };
+  }
+
+  /** @internal */
+  static fromExtendedJSON(doc: Int32Extended, options?: EJSONOptions): number | Int32 {
+    return options && options.relaxed ? parseInt(doc.$numberInt, 10) : new Int32(doc.$numberInt);
+  }
+
+  inspect(depth?: number, options?: unknown, inspect?: InspectFn): string {
+    inspect ??= defaultInspect;
+    return `new Int32(${inspect(this.value, options)})`;
+  }
+}