Exception: Unable to parse dimension value with data: 0

[Kahoulam]

Steps to reproduce

1. Create a new project
2. Add tokens.json file
3. Execute the command dart run build_runner build

Expected results

Correctly generate tokens.dart file

Actual results

An error occurred:

Exception: Unable to parse dimension value with data: 0

Version

design_tokens_builder: ^0.2.0+1

Code sample

tokens.json

{
  "global": {
    "M3": {
      "Elevation Light": {
        "1": {
          "value": [
            {
              "color": "#0000004d",
              "type": "dropShadow",
              "x": 0,
              "y": 1,
              "blur": 2,
              "spread": 0
            },
            {
              "color": "#00000026",
              "type": "dropShadow",
              "x": 0,
              "y": 1,
              "blur": 3,
              "spread": 1
            }
          ],
          "type": "boxShadow"
        },
        "2": {
          "value": [
            {
              "color": "#0000004d",
              "type": "dropShadow",
              "x": 0,
              "y": 1,
              "blur": 2,
              "spread": 0
            },
            {
              "color": "#00000026",
              "type": "dropShadow",
              "x": 0,
              "y": 2,
              "blur": 6,
              "spread": 2
            }
          ],
          "type": "boxShadow"
        },
        "3": {
          "value": [
            {
              "color": "#00000026",
              "type": "dropShadow",
              "x": 0,
              "y": 4,
              "blur": 8,
              "spread": 3
            },
            {
              "color": "#0000004d",
              "type": "dropShadow",
              "x": 0,
              "y": 1,
              "blur": 3,
              "spread": 0
            }
          ],
          "type": "boxShadow"
        },
        "4": {
          "value": [
            {
              "color": "#00000026",
              "type": "dropShadow",
              "x": 0,
              "y": 6,
              "blur": 10,
              "spread": 4
            },
            {
              "color": "#0000004d",
              "type": "dropShadow",
              "x": 0,
              "y": 2,
              "blur": 3,
              "spread": 0
            }
          ],
          "type": "boxShadow"
        },
        "5": {
          "value": [
            {
              "color": "#00000026",
              "type": "dropShadow",
              "x": 0,
              "y": 8,
              "blur": 12,
              "spread": 6
            },
            {
              "color": "#0000004d",
              "type": "dropShadow",
              "x": 0,
              "y": 4,
              "blur": 4,
              "spread": 0
            }
          ],
          "type": "boxShadow"
        }
      }
    }
  },
  "$themes": [],
  "$metadata": {
    "tokenSetOrder": [
      "global"
    ]
  }
}

Logs

Console logs

[INFO] Generating build script completed, took 264ms
[INFO] Reading cached asset graph completed, took 76ms
[INFO] Checking for updates since last build completed, took 910ms
[WARNING] design_tokens_builder|lib/design_tokens_builder.dart was not found in the asset graph, incremental builds will not work.
 This probably means you don't have your dependencies specified fully in your pubspec.yaml.
[WARNING] Invalidating asset graph due to build script update!
[INFO] Cleaning up outputs from previous builds. completed, took 1ms
[INFO] Generating build script completed, took 43ms
[WARNING] Invalidated precompiled build script due to missing asset graph.
[INFO] Precompiling build script... completed, took 625ms
[WARNING] design_tokens_builder|lib/design_tokens_builder.dart was not found in the asset graph, incremental builds will not work.
 This probably means you don't have your dependencies specified fully in your pubspec.yaml.
[INFO] Building new asset graph completed, took 899ms
[INFO] Checking for unexpected pre-existing outputs. completed, took 0ms
[SEVERE] design_tokens_builder on lib/$lib$:

Exception: Unable to parse dimension value with data: 0
[INFO] Running build completed, took 104ms
[INFO] Caching finalized dependency graph completed, took 40ms
[SEVERE] Failed after 149ms

Flutter Doctor output

Doctor output

  [✓] Flutter (Channel stable, 3.13.9, on macOS 14.0 23A344 darwin-arm64, locale en-TW)
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  [✓] VS Code (version 1.84.0)
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