wehub-resource-sync
126 lines
3.1 KiB
TypeScript
Executable File
126 lines
3.1 KiB
TypeScript
Executable File
#!/usr/bin/env bun
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/**
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* Cline Hook: PreToolUse (Modify Input)
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* Demonstrates how to modify tool inputs before execution.
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* Useful for: normalizing paths, adding default options, sanitizing inputs.
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* Copy to ~/.cline/hooks/PreToolUse.ts and chmod +x
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*/
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interface ToolInput {
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[key: string]: unknown;
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}
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interface ToolCall {
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id: string;
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name: string;
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input: ToolInput;
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}
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interface HookEvent {
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hookName: string;
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tool_call: ToolCall;
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preToolUse: {
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toolName: string;
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parameters: Record<string, unknown>;
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};
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}
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interface HookControl {
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context?: string;
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overrideInput?: Record<string, unknown>;
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}
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function normalizeFilePath(path: string): string {
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// Convert backslashes to forward slashes (Windows paths)
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let normalized = path.replace(/\\/g, "/");
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// Resolve ~/ to home directory
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const home = process.env.HOME || process.env.USERPROFILE;
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if (normalized.startsWith("~/") && home) {
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normalized = normalized.replace(/^~/, home);
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}
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return normalized;
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}
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async function main(): Promise<void> {
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let event: HookEvent;
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try {
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const input = await Bun.stdin.text();
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event = JSON.parse(input) as HookEvent;
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} catch (error) {
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const message =
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error instanceof Error ? error.message : "Unknown parse error";
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console.log(
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JSON.stringify({ errorMessage: `Failed to parse: ${message}` }),
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);
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return;
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}
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const toolCall = event.tool_call;
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const toolName = toolCall.name;
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const toolInput = toolCall.input as Record<string, unknown>;
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// Modify read_files input: normalize paths
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if (toolName === "read_files" && typeof toolInput.filePath === "string") {
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const normalized = normalizeFilePath(toolInput.filePath);
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if (normalized !== toolInput.filePath) {
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const control: HookControl = {
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context: `Normalized file path from "${toolInput.filePath}" to "${normalized}"`,
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overrideInput: {
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...toolInput,
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filePath: normalized,
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},
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};
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console.log(JSON.stringify(control));
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return;
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}
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}
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// Modify editor input: add safety defaults
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if (toolName === "editor" && typeof toolInput.filePath === "string") {
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// For critical files, add a reminder
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const filePath = toolInput.filePath as string;
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if (
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filePath.includes("package.json") ||
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filePath.includes(".env") ||
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filePath.includes("tsconfig")
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) {
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const control: HookControl = {
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context:
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"WARNING: You are about to modify a critical configuration file. Verify changes carefully.",
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};
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console.log(JSON.stringify(control));
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return;
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}
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}
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// Modify run_commands input: add safety flags
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if (toolName === "run_commands" && typeof toolInput.command === "string") {
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const cmd = toolInput.command as string;
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// Add safety flags to npm/yarn installs
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if (cmd.includes("npm install") && !cmd.includes("--save")) {
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const newCmd = cmd.replace("npm install", "npm install --save-exact");
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const control: HookControl = {
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context: "Added --save-exact flag for reproducible installs",
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overrideInput: {
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...toolInput,
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command: newCmd,
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},
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};
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console.log(JSON.stringify(control));
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return;
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}
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}
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// No modifications needed
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console.log(JSON.stringify({}));
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}
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main().catch((error) => {
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console.error("Hook error:", error);
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process.exit(1);
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});
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