@typespec/compiler/dist/src/server/debug.js

TypeSpec compiler and standard library

import { getEnvironmentVariable } from "../utils/misc.js";
/**
 * Debug areas that can be enabled via TYPESPEC_DEBUG environment variable.
 *
 * Note: We use TYPESPEC_DEBUG instead of DEBUG because the DEBUG environment variable
 * is not supported in VSCode extensions. See: https://github.com/microsoft/vscode/issues/290140
 *
 * Usage: TYPESPEC_DEBUG=server.compile,compile.config
 *
 * Examples:
 *   TYPESPEC_DEBUG=server.compile      - Enable server compilation debug logs
 *   TYPESPEC_DEBUG=*                   - Enable all debug logs
 *   TYPESPEC_DEBUG=server.compile,compile.config - Enable multiple areas
 */
const debugAreas = {
    serverCompile: "server.compile",
    updateManager: "update.manager",
    compileConfig: "compile.config",
};
/**
 * Check if a debug area is enabled via the TYPESPEC_DEBUG environment variable.
 * Supports comma-separated values and wildcards.
 */
function isDebugEnabled(area) {
    const debug = getEnvironmentVariable("TYPESPEC_DEBUG");
    if (!debug) {
        return false;
    }
    const areas = debug.split(",").map((a) => a.trim());
    return areas.some((pattern) => {
        // Exact match
        if (pattern === area) {
            return true;
        }
        // Wildcard pattern matching
        if (pattern.includes("*")) {
            const regexPattern = pattern.replace(/\*/g, ".*");
            const regex = new RegExp(`^${regexPattern}$`);
            return regex.test(area);
        }
        return false;
    });
}
export const debugLoggers = {
    serverCompile: { enabled: isDebugEnabled(debugAreas.serverCompile) },
    updateManager: { enabled: isDebugEnabled(debugAreas.updateManager) },
    compileConfig: { enabled: isDebugEnabled(debugAreas.compileConfig) },
};
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