swf-runtime 1.0.0-alpha9

Runtime engine for Serverless Workflow DSL — execute, validate, and orchestrate workflows
Documentation 
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document:
  dsl: '1.0.0'
  namespace: test
  name: expression-null-coalesce
  version: '0.1.0'
do:
  - setValues:
      set:
        existing: "${ .value // \"fallback\" }"
        missing: "${ .nonexistent // \"fallback\" }"