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Exclude the nameToReplace from valid capture avoidance #131

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Exclude the nameToReplace from valid capture avoidance #131

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3 changes: 2 additions & 1 deletion src/lib/lambda/operations.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -113,12 +113,13 @@ function replace(nameToReplace: Name, replacer: Expr, expression: Expr): Expr {
// 1: isn't free in the replacer
// 2: isn't free in the expression body
// 3: isn't captured by an intermediate function in the expression body
// 4: isn't the argument name that is being replaced.
const freeInExpressionBody = getFreeVars(expression.body).map(
(node) => node.name
);
const argNames = getAllArgumentNames(expression.body);
let newName = generateNewName(
freeInReplacer.concat(freeInExpressionBody, argNames)
freeInReplacer.concat(freeInExpressionBody, argNames, [nameToReplace])
);

// And make that the new function arg name
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