oven-sh/bun · error · Error

validateInt32 can only be used on i32 or u32

Error message

validateInt32 can only be used on i32 or u32

What it means

Error "validateInt32 can only be used on i32 or u32" thrown in oven-sh/bun.

Source

Thrown at src/codegen/bindgen-lib-internal.ts:599

  }

  enforceRange(min?: number | bigint, max?: number | bigint) {
    return this.#rangeModifier(min, max, "enforce");
  }

  get nonNull() {
    if (this.flags.nonNull) {
      throw new Error("Cannot derive nonNull on a nonNull type");
    }
    return new TypeImpl(this.kind, this.data, {
      ...this.flags,
      nonNull: true,
    });
  }

  validateInt32(min?: number, max?: number) {
    if (this.kind !== "i32") {
      throw new Error("validateInt32 can only be used on i32 or u32");
    }
    const rangeInfo = cAbiIntegerLimits("i32");
    return this.validateInteger(min ?? rangeInfo[0], max ?? rangeInfo[1]);
  }

  validateUint32(min?: number, max?: number) {
    if (this.kind !== "u32") {
      throw new Error("validateUint32 can only be used on i32 or u32");
    }
    const rangeInfo = cAbiIntegerLimits("u32");
    return this.validateInteger(min ?? rangeInfo[0], max ?? rangeInfo[1]);
  }

  validateInteger(min?: number | bigint, max?: number | bigint) {
    min ??= Number.MIN_SAFE_INTEGER;
    max ??= Number.MAX_SAFE_INTEGER;
    const enforceRange = this.#rangeModifier(min, max, "enforce") as TypeImpl;
    enforceRange.flags.nodeValidator = NodeValidator.validateInteger;

View on GitHub (pinned to 8c5296ac45)

When it happens

Trigger: Thrown at src/codegen/bindgen-lib-internal.ts:599 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of oven-sh/bun@8c5296ac45 (2026-08-16). Data as JSON: /api/errors/1eb529e862c72523. Report an issue: GitHub.