feat: add ifNot condition pattern for negative condition checks

[jumski]

Add ifNot Condition Pattern for Step Execution Control

This PR adds a new ifNot condition pattern to complement the existing if pattern for step execution control. This enables more flexible conditional execution of workflow steps.

Key changes:

• Added condition_not_pattern column to the pgflow.steps table
• Updated pgflow.add_step() function to accept the new parameter
• Enhanced condition evaluation logic in cascade_resolve_conditions() to support both patterns with AND semantics
• Added comprehensive test coverage for the new feature

The ifNot pattern works as follows:

• When used alone, a step executes when the input does NOT match the pattern
• When combined with if, both conditions must pass (AND semantics)
• Can be used to create mutually exclusive branches by using the same pattern with if on one step and ifNot on another

This feature enables more expressive workflow definitions, such as:

• "Run this step for any user who is NOT an admin"
• "Run this step for active admins who are NOT suspended"
• "Branch execution based on a condition (if/else pattern)"

The TypeScript DSL has been updated to support the new ifNot option with proper type checking.

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Latest commit: 1889d80

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[jumski]

Warning

This pull request is not mergeable via GitHub because a downstack PR is open. Once all requirements are satisfied, merge this PR as a stack on Graphite.
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• fix: improve type safety for skip-cascade mode in flow steps #593
• refactor: rename condition_pattern to required_input_pattern and condition_not_pattern to forbidden_input_pattern #587
• feat: add whenUnmet and whenFailed condition modes to flow shapes #585
• feat: add ifNot condition pattern for negative condition checks #584 👈 (View in Graphite)
• feat: improve type safety for flow step outputs and skippable dependencies #583
• feat: add type safety for skippable step dependencies #582
• feat: add ContainmentPattern type for JSON condition matching #576
• feat: add whenFailed option for error handling after retries exhausted #575
• feat: add conditional step execution with skip/fail behavior #573
• feat: add conditional step execution with skip infrastructure #572 : 1 other dependent PR (#594 )
• main

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[nx-cloud]

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☁️ Nx Cloud last updated this comment at 2026-01-20 09:49:09 UTC

[jumski]

Folded into #572 (squashed conditional steps PR)