comfyui-moonpack

ComfyUI MoonPack

A focused collection of utility nodes for ComfyUI. Strings, dimensions, dynamic inputs, fast bypassers, and a couple of video helpers.

Installation

Via ComfyUI Manager

Search for MoonPack and install.

Manual

cd ComfyUI/custom_nodes
git clone https://github.com/moonwhaler/comfyui-moonpack.git

Then restart ComfyUI.

Compatibility

v0.2 renamed all node registry keys to use a MoonPack_ prefix. Workflows saved with v0.1 still load — legacy keys are kept as aliases (marked "(legacy)" in the menu) for one release cycle. Save your workflow once after loading and it will automatically migrate to the new keys.

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Nodes

All nodes are under the MoonPack/ category in the Add Node menu.

MoonPack/image

| Node | Purpose | |---|---| | Proportional Dimension | Resize W/H to a target side while preserving aspect; snap to a divisor with nearest/floor/ceil rounding; optional from_image input. Outputs width, height, shortest_side, longest_side, scale. | | Dimension From Image | Reads width, height, batch_size from an IMAGE tensor. | | Smart Resolution | Picks a model-friendly resolution near a megapixel budget while preserving aspect ratio. Presets for SD 1.5, SDXL, Flux (1.0/1.4 MP), and Wan 480p/720p. |

MoonPack/string

| Node | Purpose | |---|---| | Simple String Replace | Sequential find => replace pairs (one per line). Optional whole-word match. Reports malformed lines via ignored_lines instead of silently dropping them. | | Regex String Replace | Full Python regex with case-insensitive / multiline / dotall flags and a non-destructive test_mode that highlights matches with >>>…<<<. Returns match_count. | | Regex Extract | Returns the first or all regex matches. If the pattern has a capture group, returns the group; otherwise the whole match. all_matches=True emits each match as a separate OUTPUT_IS_LIST item. | | Dynamic String Concat | Auto-expanding string concatenator. Has template mode ({1}, {2} placeholders), prefix/suffix, optional whitespace stripping, and an ignore_empty toggle. | | String Switch | Routes one of up to 8 string inputs based on a 1-based selector. Lazy: only the chosen branch's upstream nodes are evaluated. |

MoonPack/lora

| Node | Purpose | |---|---| | Dynamic LoRA Stack | Auto-expanding WANVIDLORA stacker (designed for kijai's WanVideoWrapper). Flattens nested lists; an empty stack returns [], not None. |

MoonPack/utils

| Node | Purpose | |---|---| | Fast Node Bypasser | Adds a toggle widget per controlled node. Connect nodes to control them, or set the matchTitle regex property to auto-match by title. Sort by position / alphanumeric / custom alphabet. Toggle restrictions: default / max one / always one. Right-click for Bypass All / Enable All / Toggle All / Refresh. | | Conditional Bypasser | Server-side gate: passes input through when enabled, returns ExecutionBlocker so downstream nodes don't run when disabled. Accepts any data type. |

MoonPack/video

| Node | Purpose | |---|---| | VACE Looper Frame Mask | Calculates total frames and a kjnodes 'Create Fade Mask Advanced' schedule. Optional images input clamps overlap to half the source length and reports it via was_clamped. | | Frame Mask Generator | General-purpose schedule generator. Modes: linear_loop, ping_pong, ease_in_out, fade_in, fade_out, custom. |

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Notable Details

Fast Node Bypasser — pattern matching

Set the matchTitle property to a regex (e.g. ^KSampler, (upscale|downscale)) and the bypasser auto-discovers matching nodes. Use the Refresh menu item to re-scan after renaming nodes or changing patterns.

customSortAlphabet accepts either single chars (zyxw…) or comma-delimited prefixes (sdxl,sd,n,p). Nodes whose titles start with the earliest entry come first; ties break alphanumerically.

String Switch — lazy evaluation

MoonPack_StringSwitch declares each input as lazy: True and implements check_lazy_status, so only the upstream graph for the selected branch is evaluated. Use this for prompt A/B tests where each branch may chain expensive generation.

Dynamic String Concat — template mode

If the template widget is non-empty, {1}, {2}, … placeholders are interpolated from input slots and separator is ignored:

template:  "{1}, in the style of {2}"
input_1:   "a cat"
input_2:   "Studio Ghibli"
result:    "a cat, in the style of Studio Ghibli"

Missing slots resolve to an empty string.

Conditional Bypasser

Routes any value through when enabled is true; when false, returns an ExecutionBlocker, preventing downstream nodes from executing entirely. Useful for graph-driven branching that depends on upstream conditions.

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Development

# Run the test suite
pytest tests/

License

MIT — see LICENSE.