Sequence Action Handler - "shareParameters" option

shareParameters allow to share parameters across child actions instead of creating cloned version to split branches.

Usage example:

# set default parameters
$parameters:
    test: false
​
'--':
    - fn: |-
        parameters.test = true
​
    - ctx:
        '$.test': 
            inline: $ref:parameters.test

As a result of execution ctx.test will have false value, ad -- clones parameters for each of the actions. Meaning fn function that modifies the parameters will have no affect on ctx.

But, if we add $shareParameters metadata, things will change:

# set default parameters
$parameters:
    test: false
​
'--':
  # tell action to share parameters
  shareParameters: true
  actions:
    - fn: |-
        parameters.test = true
​
    - ctx:
        '$.test': 
            inline: $ref:parameters.test

As a result of execution ctx.test will now have true value.

Note: this is actually an anti-pattern: parameters modification is shadowed and might not be obvious. Make sure to use shareParameters only when necessary.