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import * as vscode from "vscode";
import { spawn } from "node:child_process";
import { styleLockfile } from "./lockfile.style";
export type BunLockfile = vscode.CustomDocument & {
readonly preview: string;
};
export class BunLockfileEditorProvider implements vscode.CustomReadonlyEditorProvider {
constructor(private context: vscode.ExtensionContext) {}
async openCustomDocument(
uri: vscode.Uri,
openContext: vscode.CustomDocumentOpenContext,
token: vscode.CancellationToken,
): Promise<BunLockfile> {
const preview = await previewLockfile(uri, token);
return {
uri,
preview,
dispose() {},
};
}
async resolveCustomEditor(
document: BunLockfile,
webviewPanel: vscode.WebviewPanel,
token: vscode.CancellationToken,
): Promise<void> {
const { preview } = document;
webviewPanel.webview.options = {
localResourceRoots: [this.context.extensionUri],
};
renderLockfile(webviewPanel, preview, this.context.extensionUri);
}
}
function renderLockfile({ webview }: vscode.WebviewPanel, preview: string, extensionUri: vscode.Uri): void {
const styleVSCodeUri = webview.asWebviewUri(vscode.Uri.joinPath(extensionUri, "assets", "vscode.css"));
const lockfileContent = styleLockfile(preview);
const lineNumbers: string[] = [];
for (let i = 0; i < lockfileContent.split("\n").length; i++) {
lineNumbers.push(`<span class="line-number">${i + 1}</span>`);
}
webview.html = `
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="Content-Security-Policy" content="default-src 'none'; style-src ${webview.cspSource};">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<link href="${styleVSCodeUri}" rel="stylesheet" />
</head>
<body>
<div class="bunlock">
<div class="lines">
${lineNumbers.join("\n")}
</div>
<code>${lockfileContent}</code>
</div>
</body>
</html>`;
}
function previewLockfile(uri: vscode.Uri, token?: vscode.CancellationToken): Promise<string> {
return new Promise((resolve, reject) => {
const process = spawn("bun", [uri.fsPath], {
stdio: ["ignore", "pipe", "pipe"],
});
token?.onCancellationRequested(() => {
process.kill();
});
let stdout = "";
process.stdout.on("data", (data: Buffer) => {
stdout += data.toString();
});
let stderr = "";
process.stderr.on("data", (data: Buffer) => {
stderr += data.toString();
});
process.on("error", error => {
reject(error);
});
process.on("exit", code => {
if (code === 0) {
resolve(stdout);
} else {
reject(new Error(`Bun exited with code: ${code}\n${stderr}`));
}
});
});
}
export function registerBunlockEditor(context: vscode.ExtensionContext): void {
const viewType = "bun.lockb";
const provider = new BunLockfileEditorProvider(context);
context.subscriptions.push(
vscode.window.registerCustomEditorProvider(viewType, provider, {
supportsMultipleEditorsPerDocument: true,
webviewOptions: {
enableFindWidget: true,
retainContextWhenHidden: true,
},
}),
);
}
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