harn-rules 0.8.74

Declarative structural rule engine for Harn — rule model, pattern compiler, and matcher built on the harn-hostlib tree-sitter machinery.
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12

# The first Rule Engine customer (#2824 / burin-labs/burin-code#1629):
# find every `src?.key ?? default` shape so the codemod can fold it into a
# destructuring bind. `fix` makes this a codemod; `transform` + interpolation
# of the bound metavars into the replacement land in #2834.
id = "destructure-with-defaults"
language = "typescript"
severity = "warning"
message = "Collapse `?.x ?? default` into a destructuring bind with a default"
fix = "{ $KEY: $SRC }"

[rule]
pattern = "$SRC?.$KEY ?? $DEFAULT"