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Fix edit tool pruning to use correct field names #182

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Merged
Tarquinen merged 1 commit into from
Dec 22, 2025
Merged

Fix edit tool pruning to use correct field names #182

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11 changes: 10 additions & 1 deletion lib/messages/prune.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -206,9 +206,18 @@ const pruneToolInputs = (
continue
}

if (part.state.input?.content !== undefined) {
// Write tool has content field, edit tool has oldString/newString fields
if (part.tool === 'write' && part.state.input?.content !== undefined) {
part.state.input.content = PRUNED_TOOL_INPUT_REPLACEMENT
}
if (part.tool === 'edit') {
if (part.state.input?.oldString !== undefined) {
part.state.input.oldString = PRUNED_TOOL_INPUT_REPLACEMENT
}
if (part.state.input?.newString !== undefined) {
part.state.input.newString = PRUNED_TOOL_INPUT_REPLACEMENT
}
}
}
}
}
13 changes: 12 additions & 1 deletion lib/strategies/utils.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -55,14 +55,25 @@ export const calculateTokensSaved = (
}
// For write and edit tools, count input content as that is all we prune for these tools
// (input is present in both completed and error states)
if (part.tool === "write" || part.tool === "edit") {
if (part.tool === "write") {
const inputContent = part.state.input?.content
const content = typeof inputContent === 'string'
? inputContent
: JSON.stringify(inputContent ?? '')
contents.push(content)
continue
}
if (part.tool === "edit") {
const oldString = part.state.input?.oldString
const newString = part.state.input?.newString
if (typeof oldString === 'string') {
contents.push(oldString)
}
if (typeof newString === 'string') {
contents.push(newString)
}
continue
}
// For other tools, count output or error based on status
if (part.state.status === "completed") {
const content = typeof part.state.output === 'string'
Expand Down