WIP Contextual JSON variable interpolation

[jviotti]

This is more of a conversation starter than a solution. I encountered this case when working with the Postman app: A stringified JSON document including other JSON stringified interpolations is recursively evaluated and results in an invalid JSON document (as nested quotes are not properly escaped).

To illustrate the problem, the test case in this PR currently fails as JSON.parse() would throw the following error:

SyntaxError: Unexpected token f in JSON at position 12

Some ideas:

• There could be a way to instruct collections to only perform one level of interpolation. Maybe triple curly braces?

• Given how much JSON is relevant in Postman, there could be a way to interpolate variables in a JSON-aware manner. For example, other systems support a pipe operator where you can transform the content. In this case, we could do something like {{alpha | escape_json}}

Signed-off-by: Juan Cruz Viotti [email protected]

[codecov[bot]]

Codecov Report

Merging #1166 (23d6070) into develop (6174b01) will not change coverage. The diff coverage is n/a.

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  Hits          2218     2218           
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[codenirvana]

We have plans to introduce types in variables (this library already supports a few types) but without that, the existing interpolation is a simple string replacement.

[jviotti]

Closing stale PRs...