emberjs/ember.js · error · Error

Opcode type over 8-bits. Got ${type}.

Error message

Opcode type over 8-bits. Got ${type}.

What it means

Error "Opcode type over 8-bits. Got ${type}." thrown in emberjs/ember.js.

Source

Thrown at packages/@glimmer/opcode-compiler/lib/opcode-builder/encoder.ts:170

    this.heap.pushMachine(VM_RETURN_OP);
    this.heap.finishMalloc(handle, size);

    if (isPresentArray(this.errors)) {
      return { errors: this.errors, handle };
    } else {
      return handle;
    }
  }

  push(
    constants: CompileTimeConstants,
    type: BuilderOpcode,
    ...args: SingleBuilderOperand[]
  ): void {
    let { heap } = this;

    if (DEBUG && (type as number) > TYPE_SIZE) {
      throw new Error(`Opcode type over 8-bits. Got ${type}.`);
    }

    let machine = isMachineOp(type) ? MACHINE_MASK : 0;
    let first = type | machine | (args.length << ARG_SHIFT);

    heap.pushRaw(first);

    for (let i = 0; i < args.length; i++) {
      let op = args[i];
      heap.pushRaw(this.operand(constants, op));
    }
  }

  private operand(constants: CompileTimeConstants, operand: SingleBuilderOperand): Operand {
    if (typeof operand === 'number') {
      return operand;
    }

View on GitHub (pinned to 26f97246a8)

When it happens

Trigger: Thrown at packages/@glimmer/opcode-compiler/lib/opcode-builder/encoder.ts:170 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of emberjs/ember.js@26f97246a8 (2026-09-01). Data as JSON: /api/errors/97250dcf566a397f. Report an issue: GitHub.