UNPKG

projen

Version:

CDK for software projects

689 lines • 92.4 kB
"use strict";
var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
    if (k2 === undefined) k2 = k;
    var desc = Object.getOwnPropertyDescriptor(m, k);
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      desc = { enumerable: true, get: function() { return m[k]; } };
    }
    Object.defineProperty(o, k2, desc);
}) : (function(o, m, k, k2) {
    if (k2 === undefined) k2 = k;
    o[k2] = m[k];
}));
var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
    Object.defineProperty(o, "default", { enumerable: true, value: v });
}) : function(o, v) {
    o["default"] = v;
});
var __importStar = (this && this.__importStar) || (function () {
    var ownKeys = function(o) {
        ownKeys = Object.getOwnPropertyNames || function (o) {
            var ar = [];
            for (var k in o) if (Object.prototype.hasOwnProperty.call(o, k)) ar[ar.length] = k;
            return ar;
        };
        return ownKeys(o);
    };
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        var result = {};
        if (mod != null) for (var k = ownKeys(mod), i = 0; i < k.length; i++) if (k[i] !== "default") __createBinding(result, mod, k[i]);
        __setModuleDefault(result, mod);
        return result;
    };
})();
Object.defineProperty(exports, "__esModule", { value: true });
exports.TaskRuntime = void 0;
exports.systemShell = systemShell;
const child_process = __importStar(require("child_process"));
const fs_1 = require("fs");
const path_1 = require("path");
const path = __importStar(require("path"));
const util_1 = require("util");
const chalk_1 = require("chalk");
const common_1 = require("../common");
const logging = __importStar(require("../logging"));
const dax_1 = require("../util/dax");
const exec_1 = require("../util/exec");
// avoids a (false positive) esbuild warning about incorrect imports.
// `?.default ?? module` keeps this working both as a plain CommonJS require and
// when the dependency is interop-wrapped inside the bundled run-task.cjs (where
// `require(...)` may yield `{ default: fn }` instead of the function). See
// projen#4407 ("parseConflictJSON is not a function" after eject).
// eslint-disable-next-line @typescript-eslint/no-require-imports
const parseConflictJSONModule = require("parse-conflict-json");
const parseConflictJSON = parseConflictJSONModule?.default ?? parseConflictJSONModule;
const ENV_TRIM_LEN = 20;
const ARGS_MARKER = "$@";
const QUOTED_ARGS_MARKER = `"${ARGS_MARKER}"`;
/**
 * Renders args for splicing into a string command, escaped for whichever shell
 * will parse that command.
 *
 * Everything except `cmd.exe` gets POSIX single-quoting, which survives dax's
 * built-in shell and any POSIX shell losslessly. `cmd.exe` has no single-quote
 * syntax, so it keeps the double-quoted form.
 */
function escapeArgsFor(shell, args) {
    return isCmdExe(shell)
        ? args.map(quoteArgCmd).join(" ")
        : (0, dax_1.escapeCommand)(args);
}
/**
 * Whether a resolved shell means the host's `cmd.exe`: the only target that
 * cannot parse POSIX quoting.
 */
function isCmdExe(shell) {
    return shell === "system" && process.platform === "win32";
}
/**
 * Double-quotes a single argument for `cmd.exe`, escaping the characters that
 * stay special inside double quotes. Note that `cmd.exe` itself has no in-quote
 * escape - `\"` is understood by the receiving program's argv parser, not by the
 * shell - and `%VAR%` still expands, so not every value can be passed verbatim.
 */
function quoteArgCmd(arg) {
    return '"' + arg.replace(/(["$`\\])/g, "\\$1") + '"';
}
/**
 * dax's built-in cross-platform shell only implements a subset of POSIX shell
 * syntax and throws a terse `Not implemented: ...` for the rest. Rewrite those
 * into a short, actionable error that points at the system-shell escape hatch;
 * pass every other error through unchanged.
 */
function enrichBuiltinShellError(error, command) {
    const message = error instanceof Error ? error.message : String(error);
    if (!/Not implemented:/.test(message)) {
        /* v8 ignore next */
        return error;
    }
    const commandLine = Array.isArray(command) ? command.join(" ") : command;
    return new Error("projen's built-in shell can't run this command:\n" +
        `  ${commandLine}\n` +
        "To use your system's shell instead, set this task to TaskShell.system().");
}
/**
 * The runtime component of the tasks engine.
 */
class TaskRuntime {
    /**
     * The project-relative path of the tasks manifest file.
     */
    static MANIFEST_FILE = path.posix.join(common_1.PROJEN_DIR, "tasks.json");
    /**
     * One-shot entrypoint for the standalone task runner.
     *
     * Creates a runtime rooted at the current working directory, runs the named
     * task, and converts any failure into a non-zero process exit code. This is
     * the single line invoked by the bundled `scripts/run-task.cjs` that
     * "projen eject" emits, which keeps the generated bundle footer trivial.
     *
     * @param name The name of the task to run. Defaults to `process.argv[2]`.
     */
    static async main(name = process.argv[2]) {
        try {
            await new TaskRuntime(".").runTask(name);
        }
        catch (e) {
            console.error(e?.stack ?? String(e));
            process.exit(1);
        }
    }
    /**
     * The contents of tasks.json
     */
    _manifest = { tasks: {} };
    /**
     * The raw contents of the currently loaded manifest, used to detect changes
     * on disk so the runtime can reload a regenerated manifest mid-run.
     */
    _identity;
    /**
     * The root directory of the project and the cwd for executing tasks.
     */
    workdir;
    constructor(workdir) {
        this.workdir = (0, path_1.resolve)(workdir);
        // Perform the initial load. This also verifies the manifest's schema
        // version.
        this.reloadManifestIfChanged();
    }
    /**
     * The contents of tasks.json
     */
    get manifest() {
        return this._manifest;
    }
    /**
     * The absolute path of the tasks manifest file.
     */
    get manifestPath() {
        return (0, path_1.join)(this.workdir, TaskRuntime.MANIFEST_FILE);
    }
    /**
     * The tasks in this project.
     */
    get tasks() {
        return Object.values(this.manifest.tasks ?? {});
    }
    /**
     * Find a task by name, or `undefined` if not found.
     */
    tryFindTask(name) {
        if (!this.manifest.tasks) {
            return undefined;
        }
        return this.manifest.tasks[name];
    }
    /**
     * Runs the task.
     * @param name The task name.
     */
    async runTask(name, parents = [], args = [], env = {}, options = {}) {
        // A previously executed task (most importantly the "default"/synth task,
        // which `build` spawns first) may have regenerated `.projen/tasks.json`.
        // Pick up any such changes before resolving and running this task so we
        // never execute a stale, in-memory definition.
        this.reloadManifestIfChanged();
        const task = this.tryFindTask(name);
        if (!task) {
            throw new Error(`cannot find command ${name}`);
        }
        const runner = new RunTask(this, task, parents, args, env);
        return options.captureOutput ? runner.runCapturingOutput() : runner.run();
    }
    /**
     * Re-reads the tasks manifest from disk if its contents changed since it was
     * last loaded, verifying its schema version along the way.
     *
     * Change detection compares the raw file contents, so an unchanged manifest
     * is not re-verified or re-adopted.
     */
    reloadManifestIfChanged() {
        if (!(0, fs_1.existsSync)(this.manifestPath)) {
            // No manifest on disk: treat as an empty project (legacy behavior).
            this._manifest = { tasks: {} };
            this._identity = undefined;
            return;
        }
        const raw = (0, fs_1.readFileSync)(this.manifestPath, "utf-8");
        if (raw === this._identity) {
            return; // unchanged since the last load
        }
        const manifest = parseConflictJSON(raw, undefined, "theirs");
        // A previously loaded manifest means this is a *reload* (e.g. the
        // "default"/synth task regenerated the file mid-run), as opposed to the
        // initial load performed by the constructor.
        const isReload = this._identity !== undefined;
        this.verifyManifest(manifest);
        this._manifest = manifest;
        this._identity = raw;
        if (isReload) {
            logging.debug(`${TaskRuntime.MANIFEST_FILE} changed on disk; successfully loaded the new tasks manifest.`);
        }
    }
    /**
     * Validates a freshly read manifest:
     *
     * - Legacy manifests (no `manifestVersion`) are accepted as-is for backwards
     *   compatibility.
     * - Manifests from a newer projen (a higher `manifestVersion`) are accepted
     *   with a warning, since this runtime may not understand the schema.
     */
    verifyManifest(manifest) {
        // Backwards compatibility: manifests generated before versioning carry no
        // version.
        if (manifest.manifestVersion === undefined) {
            return;
        }
        if (manifest.manifestVersion > common_1.TASKS_MANIFEST_VERSION) {
            logging.warn(`${TaskRuntime.MANIFEST_FILE} was generated by a newer version of projen ` +
                `(manifest version ${manifest.manifestVersion}, this projen supports up to ${common_1.TASKS_MANIFEST_VERSION}). ` +
                `Some tasks may not behave as expected; consider upgrading projen.`);
        }
    }
}
exports.TaskRuntime = TaskRuntime;
class RunTask {
    runtime;
    task;
    args;
    envParam;
    env = {};
    parents;
    workdir;
    // When set, every step's stdout is captured and accumulated (for a spawned
    // task whose aggregate output the caller wants).
    captureAll = false;
    captured = [];
    // `outputEnv` captures, propagated to spawned subtasks (exec/builtin steps
    // see them via `this.env`).
    capturedEnv = {};
    constructor(runtime, task, parents = [], args = [], envParam = {}) {
        this.runtime = runtime;
        this.task = task;
        this.args = args;
        this.envParam = envParam;
        this.workdir = task.cwd ?? this.runtime.workdir;
        this.parents = parents;
    }
    /**
     * Runs the task, capturing and returning the trimmed, newline-joined stdout
     * of all its steps (and any nested spawned tasks) in execution order.
     */
    async runCapturingOutput() {
        this.captureAll = true;
        await this.run();
        return this.captured.join("\n").trim();
    }
    /**
     * Records a step's captured (trimmed) stdout: into `outputEnv` for later
     * steps (and propagated to spawned subtasks), and into the run's aggregate
     * output when capturing everything.
     */
    recordCapture(outputEnv, value) {
        if (outputEnv) {
            this.env[outputEnv] = value;
            this.capturedEnv[outputEnv] = value;
        }
        if (this.captureAll) {
            this.captured.push(value);
        }
    }
    /**
     * Executes the task. This was previously done in the constructor, but is now
     * an async method since shell execution is asynchronous (e.g. dax on
     * Windows).
     */
    async run() {
        const { task, args, parents } = this;
        if (!task.steps || task.steps.length === 0) {
            this.logDebug((0, chalk_1.gray)("No actions have been specified for this task."));
            return;
        }
        this.env = await this.resolveEnvironment(this.envParam, parents, this.resolveShell());
        const envlogs = [];
        for (const [k, v] of Object.entries(this.env)) {
            const vv = v ?? "";
            const trimmed = vv.length > ENV_TRIM_LEN ? vv.substring(0, ENV_TRIM_LEN) + "..." : vv;
            envlogs.push(`${k}=${trimmed}`);
        }
        if (envlogs.length) {
            this.logDebug((0, chalk_1.gray)(`${(0, chalk_1.underline)("env")}: ${envlogs.join(" ")}`));
        }
        // evaluate condition
        if (!(await this.evalCondition(task, this.resolveShell()))) {
            this.log("condition exited with non-zero - skipping");
            return;
        }
        // verify we required environment variables are defined
        const merged = { ...process.env, ...this.env };
        const missing = new Array();
        for (const name of task.requiredEnv ?? []) {
            if (!(name in merged)) {
                missing.push(name);
            }
        }
        if (missing.length > 0) {
            throw new Error(`missing required environment variables: ${missing.join(",")}`);
        }
        for (const step of task.steps) {
            const stepShell = this.resolveShell(step);
            // evaluate step condition
            if (!(await this.evalCondition(step, stepShell))) {
                this.log("condition exited with non-zero - skipping");
                continue;
            }
            const argsList = [
                ...(step.args || []),
                ...(step.receiveArgs ? args : []),
            ].map((a) => a.toString());
            if (step.say) {
                logging.info(this.fmtLog(step.say));
            }
            if (step.spawn) {
                const capture = this.captureAll || !!step.outputEnv;
                const output = await this.runtime.runTask(step.spawn, [...this.parents, this.task.name], argsList, { ...this.capturedEnv, ...step.env }, { captureOutput: capture });
                if (typeof output === "string") {
                    this.recordCapture(step.outputEnv, output);
                }
            }
            const execs = step.exec ? [step.exec] : [];
            // Parse step-specific environment variables
            const env = await this.evalEnvironment(step.env ?? {}, stepShell);
            if (step.builtin) {
                execs.push(this.renderBuiltin(step.builtin));
            }
            // `execArgs` is an explicit argv (the program followed by its arguments).
            // It is handed to `shell()` as an array rather than a rendered string, so
            // it runs without a shell and every element is passed through verbatim -
            // which is what lets callers avoid thinking about quoting. Fixed/received
            // args are spliced in wherever a `$@` marker element appears (mirroring
            // the string `exec` behavior), or appended at the end if there is none.
            if (step.execArgs) {
                const argv = [];
                let placed = false;
                for (const element of step.execArgs) {
                    if (element === ARGS_MARKER) {
                        argv.push(...argsList);
                        placed = true;
                    }
                    else {
                        argv.push(element);
                    }
                }
                if (!placed) {
                    argv.push(...argsList);
                }
                execs.push(argv);
            }
            for (const exec of execs) {
                let command = exec;
                // A string command is a shell line: splice task args in per the `$@`
                // marker rules. An `execArgs` argv already carries its args, untouched.
                if (typeof command === "string") {
                    if (command.includes(QUOTED_ARGS_MARKER)) {
                        // `"$@"`: splice each arg in as a separate verbatim word (like
                        // bash's quoted `"$@"`), so whitespace and metacharacters survive.
                        command = command.replace(QUOTED_ARGS_MARKER, escapeArgsFor(stepShell, argsList));
                    }
                    else if (command.includes(ARGS_MARKER)) {
                        command = command.replace(ARGS_MARKER, argsList.join(" "));
                    }
                    else {
                        command = [command, ...argsList].join(" ");
                    }
                }
                const cwd = step.cwd;
                const capture = this.captureAll || !!step.outputEnv;
                // A thrown error (e.g. spawn failure) propagates; a non-zero exit is
                // reported via `result.status`.
                const result = await this.shell({
                    command,
                    cwd,
                    extraEnv: env,
                    shell: stepShell,
                    captureOutput: capture,
                });
                if (result.status !== 0) {
                    throw new Error(`Task "${this.fullname}" failed when executing "${Array.isArray(command) ? command.join(" ") : command}" (cwd: ${(0, path_1.resolve)(cwd ?? this.workdir)})`);
                }
                if (capture) {
                    const stdout = result.stdout?.toString("utf-8").trim() ?? "";
                    this.recordCapture(step.outputEnv, stdout);
                }
            }
        }
    }
    /**
     * Determines if a task should be executed based on "condition".
     *
     * @returns true if the task should be executed or false if the condition
     * evaluates to false (exits with non-zero), indicating that the task should
     * be skipped.
     */
    async evalCondition(taskOrStep, shell) {
        // no condition, carry on
        if (!taskOrStep.condition) {
            return true;
        }
        this.log((0, chalk_1.gray)(`${(0, chalk_1.underline)("condition")}: ${taskOrStep.condition}`));
        const result = await this.shell({
            command: taskOrStep.condition,
            quiet: true,
            shell,
        });
        if (result.status === 0) {
            return true;
        }
        else {
            return false;
        }
    }
    /**
     * Evaluates environment variables from shell commands (e.g. `$(xx)`)
     */
    async evalEnvironment(env, shell) {
        const output = {};
        for (const [key, value] of Object.entries(env ?? {})) {
            if (String(value).startsWith("$(") && String(value).endsWith(")")) {
                const query = value.substring(2, value.length - 1);
                const result = await this.shell({
                    command: query,
                    quiet: true,
                    captureOutput: true,
                    shell,
                });
                if (result.status !== 0) {
                    const error = result.error
                        ? result.error.stack
                        : result.stderr?.toString().trim() ||
                            result.stdout?.toString().trim() ||
                            `command exited with code ${result.status}`;
                    logging.warn(this.fmtLog(`${(0, chalk_1.underline)(key)}: unable to evaluate "${query}". Environment variable will be skipped. Check that the command exists and runs successfully.`));
                    logging.warn(this.fmtLog(`${(0, chalk_1.underline)(key)}: ${error}`));
                }
                else {
                    output[key] = result.stdout?.toString("utf-8").trim() ?? "";
                }
            }
            else {
                output[key] = value;
            }
        }
        return output;
    }
    /**
     * Renders the runtime environment for a task. Namely, it supports this syntax
     * `$(xx)` for allowing environment to be evaluated by executing a shell
     * command and obtaining its result.
     */
    async resolveEnvironment(envParam, parents, shell) {
        let env = this.runtime.manifest.env ?? {};
        // add env from all parent tasks one by one
        for (const parent of parents) {
            env = {
                ...env,
                ...(this.runtime.tryFindTask(parent)?.env ?? {}),
            };
        }
        // apply task environment, then the specific env last
        env = {
            ...env,
            ...(this.task.env ?? {}),
            ...envParam,
        };
        return this.evalEnvironment(env, shell);
    }
    /**
     * Resolves the shell for a step's command (or the task's, when no step is
     * given): step, then task, then project default, then "projen".
     */
    resolveShell(step) {
        return (step?.shell ?? this.task.shell ?? this.runtime.manifest.shell ?? "projen");
    }
    /**
     * Returns the "full name" of the task which includes all it's parent task names concatenated by chevrons.
     */
    get fullname() {
        return [...this.parents, this.task.name].join(" » ");
    }
    log(...args) {
        logging.verbose(this.fmtLog(...args));
    }
    logDebug(...args) {
        logging.debug(this.fmtLog(...args));
    }
    fmtLog(...args) {
        return (0, util_1.format)(`${(0, chalk_1.underline)(this.fullname)} |`, ...args);
    }
    async shell(options) {
        const quiet = options.quiet ?? false;
        if (!quiet) {
            const log = new Array();
            log.push(Array.isArray(options.command)
                ? options.command.join(" ")
                : options.command);
            if (options.cwd) {
                log.push(`(cwd: ${options.cwd})`);
            }
            this.log(log.join(" "));
        }
        const cwd = options.cwd ?? this.workdir;
        if (!(0, fs_1.existsSync)(cwd) || !(0, fs_1.statSync)(cwd).isDirectory()) {
            throw new Error(`invalid workdir (cwd): ${cwd} must be an existing directory`);
        }
        // The resolved shell is one of:
        // - "projen" (default): dax's in-process cross-platform shell, so POSIX-style
        //   task syntax (`mkdir -p`, `&&`, `$VAR`, ...) works the same everywhere.
        // - "system": the host's native shell (`/bin/sh`, or `cmd.exe` on Windows).
        // - an argv, e.g. ["bash","-c"]: a shell invocation with the command appended
        //   as its final argument.
        const shell = options.shell ?? "projen";
        if (typeof shell === "string" && shell !== "projen" && shell !== "system") {
            throw new Error(`unknown built-in shell ${JSON.stringify(shell)}; use the built-in "projen" or "system" shells, or a TaskShell.command([...]) invocation`);
        }
        const capture = options.captureOutput ?? false;
        // Quiet captures (`$(...)`, conditions) stay silent; visible captures
        // (`outputEnv`) stream live while still buffering.
        const stream = capture && !quiet;
        const command = options.command;
        const env = {
            ...process.env,
            ...this.env,
            ...options.extraEnv,
        };
        // "system": the host-native engine. A string command runs through the OS
        // shell; an `execArgs` argv is spawned directly (shell-free), so the real
        // binary runs with no dax built-ins. (Only `$(...)`/condition eval captures,
        // and those always pass a string, so an array command never needs capture.)
        if (shell === "system") {
            if (Array.isArray(command)) {
                const [program, ...args] = command;
                try {
                    (0, exec_1.tool)(program).run(args, { cwd, env, inheritStdio: true });
                    return { status: 0 };
                }
                catch (e) {
                    if (typeof e?.status === "number") {
                        return { status: e.status };
                    }
                    throw e;
                }
            }
            return systemShell(command, { cwd, env, capture, stream });
        }
        // Otherwise run through dax: the "projen" shell or an explicit invocation.
        const builder = this.buildDaxCommand(command, shell);
        // `inheritPiped` streams and buffers; `piped` buffers quietly. stderr is
        // buffered only for quiet captures, so it can surface in errors.
        const stdoutMode = capture
            ? stream
                ? "inheritPiped"
                : "piped"
            : "inherit";
        const stderrMode = capture && !stream ? "piped" : "inherit";
        let result;
        try {
            result = await builder
                .cwd(cwd)
                .env(env)
                .stdout(stdoutMode)
                .stderr(stderrMode)
                .noThrow();
        }
        catch (e) {
            // dax's in-process shell throws a terse `Not implemented: ...` for shell
            // syntax it does not support (e.g. `$(...)` command substitution); turn
            // that into an actionable error that points at the system-shell escape
            // hatch. Other errors pass through unchanged.
            throw enrichBuiltinShellError(e, command);
        }
        return {
            status: result.code,
            stdout: capture ? Buffer.from(result.stdoutBytes) : null,
            stderr: capture && !stream ? Buffer.from(result.stderrBytes) : null,
        };
    }
    /**
     * Builds the dax command for the "projen" shell or an explicit invocation.
     * (The "system" shell is handled host-side, not here.) `command` is a shell
     * line (string) or an `execArgs` argv (string[]); `shell` is `"projen"` or an
     * invocation argv such as `["bash", "-c"]`.
     */
    buildDaxCommand(command, shell) {
        // An invocation (e.g. ["bash","-c"], ["npx","--no","-c"]): append the
        // command as its final argument. A string is appended as-is; an `execArgs`
        // argv is rendered to a quoted command line so the shell re-parses the same
        // argv. That rendering assumes a POSIX-style shell, which is what such an
        // invocation is (`bash -c`, `sh -c`, `npx -c`, ...).
        if (Array.isArray(shell)) {
            const [program, ...flags] = shell;
            const commandLine = Array.isArray(command)
                ? (0, dax_1.escapeCommand)(command)
                : command;
            return (0, dax_1.$) `${program} ${[...flags, commandLine]}`;
        }
        // The built-in "projen" shell (dax).
        return Array.isArray(command)
            ? // execArgs: shell-free argv (each element escaped; `.cmd` shims resolved).
                (0, dax_1.$) `${command[0]} ${command.slice(1)}`
            : // string command, parsed in-process by dax's cross-platform shell.
                dax_1.$.raw `${command}`;
    }
    renderBuiltin(builtin) {
        // Locate projen's package root by walking up from this module's directory
        // until we find a package.json. This works whether the code runs from the
        // compiled file (lib/cli/task-runtime.js) or from the bundled run-task.cjs
        // (lib/run-task.cjs), which live at different depths - so a hard-coded
        // relative path to package.json would be wrong in one of the two cases.
        let moduleRoot = __dirname;
        while (!(0, fs_1.existsSync)((0, path_1.join)(moduleRoot, "package.json"))) {
            const parent = (0, path_1.dirname)(moduleRoot);
            if (parent === moduleRoot) {
                throw new Error("unable to locate the projen package root");
            }
            moduleRoot = parent;
        }
        const program = require.resolve((0, path_1.join)(moduleRoot, "lib", `${builtin}.task.js`));
        return `"${process.execPath}" "${program}"`;
    }
}
/**
 * Runs a command line through the operating system's native shell.
 *
 * Calls the OS shell via `child_process` with `shell: true`.
 * This backs the `system` task shell, which lets a user opt out of the built-in
 * cross-platform shell and use the host's native shell instead:
 * `/bin/sh`on POSIX and `cmd.exe` on Windows.
 *
 * Never throws for a non-zero exit (that is reported via `status`);
 * a spawn failure is reported via `error`. The caller supplies the full `env`.
 */
function systemShell(command, options) {
    logging.debug(`${command} (cwd: ${options.cwd})`);
    const result = child_process.spawnSync(command, {
        cwd: options.cwd,
        shell: true,
        maxBuffer: exec_1.MAX_BUFFER,
        env: options.env,
        // Quiet capture buffers stderr for error messages. Streamed capture
        // inherits stderr and re-emits buffered stdout afterwards, since spawnSync
        // can't both show and buffer the same stream at once.
        stdio: options.capture
            ? options.stream
                ? ["inherit", "pipe", "inherit"]
                : ["inherit", "pipe", "pipe"]
            : "inherit",
    });
    if (options.capture && options.stream && result.stdout) {
        process.stdout.write(result.stdout);
    }
    return {
        status: result.status,
        stdout: result.stdout ?? null,
        stderr: result.stderr ?? null,
        error: result.error,
    };
}
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See\n// projen#4407 (\"parseConflictJSON is not a function\" after eject).\n// eslint-disable-next-line @typescript-eslint/no-require-imports\nconst parseConflictJSONModule = require(\"parse-conflict-json\");\nconst parseConflictJSON =\n  parseConflictJSONModule?.default ?? parseConflictJSONModule;\n\nconst ENV_TRIM_LEN = 20;\nconst ARGS_MARKER = \"$@\";\nconst QUOTED_ARGS_MARKER = `\"${ARGS_MARKER}\"`;\n\n/**\n * Renders args for splicing into a string command, escaped for whichever shell\n * will parse that command.\n *\n * Everything except `cmd.exe` gets POSIX single-quoting, which survives dax's\n * built-in shell and any POSIX shell losslessly. `cmd.exe` has no single-quote\n * syntax, so it keeps the double-quoted form.\n */\nfunction escapeArgsFor(shell: string | string[], args: string[]): string {\n  return isCmdExe(shell)\n    ? args.map(quoteArgCmd).join(\" \")\n    : escapeCommand(args);\n}\n\n/**\n * Whether a resolved shell means the host's `cmd.exe`: the only target that\n * cannot parse POSIX quoting.\n */\nfunction isCmdExe(shell: string | string[]): boolean {\n  return shell === \"system\" && process.platform === \"win32\";\n}\n\n/**\n * Double-quotes a single argument for `cmd.exe`, escaping the characters that\n * stay special inside double quotes. Note that `cmd.exe` itself has no in-quote\n * escape - `\\\"` is understood by the receiving program's argv parser, not by the\n * shell - and `%VAR%` still expands, so not every value can be passed verbatim.\n */\nfunction quoteArgCmd(arg: string): string {\n  return '\"' + arg.replace(/([\"$`\\\\])/g, \"\\\\$1\") + '\"';\n}\n\n/**\n * dax's built-in cross-platform shell only implements a subset of POSIX shell\n * syntax and throws a terse `Not implemented: ...` for the rest. Rewrite those\n * into a short, actionable error that points at the system-shell escape hatch;\n * pass every other error through unchanged.\n */\nfunction enrichBuiltinShellError(\n  error: unknown,\n  command: string | string[],\n): unknown {\n  const message = error instanceof Error ? error.message : String(error);\n  if (!/Not implemented:/.test(message)) {\n    /* v8 ignore next */\n    return error;\n  }\n\n  const commandLine = Array.isArray(command) ? command.join(\" \") : command;\n  return new Error(\n    \"projen's built-in shell can't run this command:\\n\" +\n      `  ${commandLine}\\n` +\n      \"To use your system's shell instead, set this task to TaskShell.system().\",\n  );\n}\n\n/**\n * Normalized result of `shell()` (a subset of node's `SpawnSyncReturns`).\n */\ninterface ShellResult {\n  /**\n   * The exit code of the command, or `null` if the process was terminated by a\n   * signal or never spawned.\n   */\n  readonly status: number | null;\n\n  /**\n   * Captured stdout. 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This is\n   * the single line invoked by the bundled `scripts/run-task.cjs` that\n   * \"projen eject\" emits, which keeps the generated bundle footer trivial.\n   *\n   * @param name The name of the task to run. Defaults to `process.argv[2]`.\n   */\n  public static async main(name: string = process.argv[2]): Promise<void> {\n    try {\n      await new TaskRuntime(\".\").runTask(name);\n    } catch (e: any) {\n      console.error(e?.stack ?? String(e));\n      process.exit(1);\n    }\n  }\n\n  /**\n   * The contents of tasks.json\n   */\n  private _manifest: TasksManifest = { tasks: {} };\n\n  /**\n   * The raw contents of the currently loaded manifest, used to detect changes\n   * on disk so the runtime can reload a regenerated manifest mid-run.\n   */\n  private _identity?: string;\n\n  /**\n   * The root directory of the project and the cwd for executing tasks.\n   */\n  public readonly workdir: string;\n\n  constructor(workdir: string) {\n    this.workdir = resolve(workdir);\n    // Perform the initial load. This also verifies the manifest's schema\n    // version.\n    this.reloadManifestIfChanged();\n  }\n\n  /**\n   * The contents of tasks.json\n   */\n  public get manifest(): TasksManifest {\n    return this._manifest;\n  }\n\n  /**\n   * The absolute path of the tasks manifest file.\n   */\n  private get manifestPath(): string {\n    return join(this.workdir, TaskRuntime.MANIFEST_FILE);\n  }\n\n  /**\n   * The tasks in this project.\n   */\n  public get tasks(): TaskSpec[] {\n    return Object.values(this.manifest.tasks ?? {});\n  }\n\n  /**\n   * Find a task by name, or `undefined` if not found.\n   */\n  public tryFindTask(name: string): TaskSpec | undefined {\n    if (!this.manifest.tasks) {\n      return undefined;\n    }\n    return this.manifest.tasks[name];\n  }\n\n  /**\n   * Runs the task.\n   * @param name The task name.\n   */\n  public async runTask(\n    name: string,\n    parents: string[] = [],\n    args: Array<string | number> = [],\n    env: { [name: string]: string } = {},\n    options: { captureOutput?: boolean } = {},\n  ): Promise<string | void> {\n    // A previously executed task (most importantly the \"default\"/synth task,\n    // which `build` spawns first) may have regenerated `.projen/tasks.json`.\n    // Pick up any such changes before resolving and running this task so we\n    // never execute a stale, in-memory definition.\n    this.reloadManifestIfChanged();\n\n    const task = this.tryFindTask(name);\n    if (!task) {\n      throw new Error(`cannot find command ${name}`);\n    }\n\n    const runner = new RunTask(this, task, parents, args, env);\n    return options.captureOutput ? runner.runCapturingOutput() : runner.run();\n  }\n\n  /**\n   * Re-reads the tasks manifest from disk if its contents changed since it was\n   * last loaded, verifying its schema version along the way.\n   *\n   * Change detection compares the raw file contents, so an unchanged manifest\n   * is not re-verified or re-adopted.\n   */\n  private reloadManifestIfChanged(): void {\n    if (!existsSync(this.manifestPath)) {\n      // No manifest on disk: treat as an empty project (legacy behavior).\n      this._manifest = { tasks: {} };\n      this._identity = undefined;\n      return;\n    }\n\n    const raw = readFileSync(this.manifestPath, \"utf-8\");\n    if (raw === this._identity) {\n      return; // unchanged since the last load\n    }\n\n    const manifest: TasksManifest = parseConflictJSON(raw, undefined, \"theirs\");\n\n    // A previously loaded manifest means this is a *reload* (e.g. the\n    // \"default\"/synth task regenerated the file mid-run), as opposed to the\n    // initial load performed by the constructor.\n    const isReload = this._identity !== undefined;\n\n    this.verifyManifest(manifest);\n    this._manifest = manifest;\n    this._identity = raw;\n\n    if (isReload) {\n      logging.debug(\n        `${TaskRuntime.MANIFEST_FILE} changed on disk; successfully loaded the new tasks manifest.`,\n      );\n    }\n  }\n\n  /**\n   * Validates a freshly read manifest:\n   *\n   * - Legacy manifests (no `manifestVersion`) are accepted as-is for backwards\n   *   compatibility.\n   * - Manifests from a newer projen (a higher `manifestVersion`) are accepted\n   *   with a warning, since this runtime may not understand the schema.\n   */\n  private verifyManifest(manifest: TasksManifest): void {\n    // Backwards compatibility: manifests generated before versioning carry no\n    // version.\n    if (manifest.manifestVersion === undefined) {\n      return;\n    }\n\n    if (manifest.manifestVersion > TASKS_MANIFEST_VERSION) {\n      logging.warn(\n        `${TaskRuntime.MANIFEST_FILE} was generated by a newer version of projen ` +\n          `(manifest version ${manifest.manifestVersion}, this projen supports up to ${TASKS_MANIFEST_VERSION}). ` +\n          `Some tasks may not behave as expected; consider upgrading projen.`,\n      );\n    }\n  }\n}\n\nclass RunTask {\n  private env: { [name: string]: string | undefined } = {};\n  private readonly parents: string[];\n\n  private readonly workdir: string;\n\n  // When set, every step's stdout is captured and accumulated (for a spawned\n  // task whose aggregate output the caller wants).\n  private captureAll = false;\n  private readonly captured: string[] = [];\n\n  // `outputEnv` captures, propagated to spawned subtasks (exec/builtin steps\n  // see them via `this.env`).\n  private readonly capturedEnv: { [name: string]: string } = {};\n\n  constructor(\n    private readonly runtime: TaskRuntime,\n    private readonly task: TaskSpec,\n    parents: string[] = [],\n    private readonly args: Array<string | number> = [],\n    private readonly envParam: { [name: string]: string } = {},\n  ) {\n    this.workdir = task.cwd ?? this.runtime.workdir;\n    this.parents = parents;\n  }\n\n  /**\n   * Runs the task, capturing and returning the trimmed, newline-joined stdout\n   * of all its steps (and any nested spawned tasks) in execution order.\n   */\n  public async runCapturingOutput(): Promise<string> {\n    this.captureAll = true;\n    await this.run();\n    return this.captured.join(\"\\n\").trim();\n  }\n\n  /**\n   * Records a step's captured (trimmed) stdout: into `outputEnv` for later\n   * steps (and propagated to spawned subtasks), and into the run's aggregate\n   * output when capturing everything.\n   */\n  private recordCapture(outputEnv: string | undefined, value: string) {\n    if (outputEnv) {\n      this.env[outputEnv] = value;\n      this.capturedEnv[outputEnv] = value;\n    }\n    if (this.captureAll) {\n      this.captured.push(value);\n    }\n  }\n\n  /**\n   * Executes the task. This was previously done in the constructor, but is now\n   * an async method since shell execution is asynchronous (e.g. dax on\n   * Windows).\n   */\n  public async run(): Promise<void> {\n    const { task, args, parents } = this;\n\n    if (!task.steps || task.steps.length === 0) {\n      this.logDebug(gray(\"No actions have been specified for this task.\"));\n      return;\n    }\n\n    this.env = await this.resolveEnvironment(\n      this.envParam,\n      parents,\n      this.resolveShell(),\n    );\n\n    const envlogs = [];\n    for (const [k, v] of Object.entries(this.env)) {\n      const vv = v ?? \"\";\n      const trimmed =\n        vv.length > ENV_TRIM_LEN ? vv.substring(0, ENV_TRIM_LEN) + \"...\" : vv;\n      envlogs.push(`${k}=${trimmed}`);\n    }\n\n    if (envlogs.length) {\n      this.logDebug(gray(`${underline(\"env\")}: ${envlogs.join(\" \")}`));\n    }\n\n    // evaluate condition\n    if (!(await this.evalCondition(task, this.resolveShell()))) {\n      this.log(\"condition exited with non-zero - skipping\");\n      return;\n    }\n\n    // verify we required environment variables are defined\n    const merged = { ...process.env, ...this.env };\n    const missing = new Array<string>();\n    for (const name of task.requiredEnv ?? []) {\n      if (!(name in merged)) {\n        missing.push(name);\n      }\n    }\n\n    if (missing.length > 0) {\n      throw new Error(\n        `missing required environment variables: ${missing.join(\",\")}`,\n      );\n    }\n\n    for (const step of task.steps) {\n      const stepShell = this.resolveShell(step);\n\n      // evaluate step condition\n      if (!(await this.evalCondition(step, stepShell))) {\n        this.log(\"condition exited with non-zero - skipping\");\n        continue;\n      }\n\n      const argsList: string[] = [\n        ...(step.args || []),\n        ...(step.receiveArgs ? args : []),\n      ].map((a) => a.toString());\n\n      if (step.say) {\n        logging.info(this.fmtLog(step.say));\n      }\n\n      if (step.spawn) {\n        const capture = this.captureAll || !!step.outputEnv;\n        const output = await this.runtime.runTask(\n          step.spawn,\n          [...this.parents, this.task.name],\n          argsList,\n          { ...this.capturedEnv, ...step.env },\n          { captureOutput: capture },\n        );\n        if (typeof output === \"string\") {\n          this.recordCapture(step.outputEnv, output);\n        }\n      }\n\n      const execs: Array<string | string[]> = step.exec ? [step.exec] : [];\n\n      // Parse step-specific environment variables\n      const env = await this.evalEnvironment(step.env ?? {}, stepShell);\n\n      if (step.builtin) {\n        execs.push(this.renderBuiltin(step.builtin));\n      }\n\n      // `execArgs` is an explicit argv (the program followed by its arguments).\n      // It is handed to `shell()` as an array rather than a rendered string, so\n      // it runs without a shell and every element is passed through verbatim -\n      // which is what lets callers avoid thinking about quoting. Fixed/received\n      // args are spliced in wherever a `$@` marker element appears (mirroring\n      // the string `exec` behavior), or appended at the end if there is none.\n      if (step.execArgs) {\n        const argv: string[] = [];\n        let placed = false;\n        for (const element of step.execArgs) {\n          if (element === ARGS_MARKER) {\n            argv.push(...argsList);\n            placed = true;\n          } else {\n            argv.push(element);\n          }\n        }\n        if (!placed) {\n          argv.push(...argsList);\n        }\n        execs.push(argv);\n      }\n\n      for (const exec of execs) {\n        let command = exec;\n\n        // A string command is a shell line: splice task args in per the `$@`\n        // marker rules. An `execArgs` argv already carries its args, untouched.\n        if (typeof command === \"string\") {\n          if (command.includes(QUOTED_ARGS_MARKER)) {\n            // `\"$@\"`: splice each arg in as a separate verbatim word (like\n            // bash's quoted `\"$@\"`), so whitespace and metacharacters survive.\n            command = command.replace(\n              QUOTED_ARGS_MARKER,\n              escapeArgsFor(stepShell, argsList),\n            );\n          } else if (command.includes(ARGS_MARKER)) {\n            command = command.replace(ARGS_MARKER, argsList.join(\" \"));\n          } else {\n            command = [command, ...argsList].join(\" \");\n          }\n        }\n\n        const cwd = step.cwd;\n        const capture = this.captureAll || !!step.outputEnv;\n        // A thrown error (e.g. spawn failure) propagates; a non-zero exit is\n        // reported via `result.status`.\n        const result = await this.shell({\n          command,\n          cwd,\n          extraEnv: env,\n          shell: stepShell,\n          captureOutput: capture,\n        });\n        if (result.status !== 0) {\n          throw new Error(\n            `Task \"${this.fullname}\" failed when executing \"${\n              Array.isArray(command) ? command.join(\" \") : command\n            }\" (cwd: ${resolve(cwd ?? this.workdir)})`,\n          );\n        }\n        if (capture) {\n          const stdout = result.stdout?.toString(\"utf-8\").trim() ?? \"\";\n          this.recordCapture(step.outputEnv, stdout);\n        }\n      }\n    }\n  }\n\n  /**\n   * Determines if a task should be executed based on \"condition\".\n   *\n   * @returns true if the task should be executed or false if the condition\n   * evaluates to false (exits with non-zero), indicating that the task should\n   * be skipped.\n   */\n  private async evalCondition(\n    taskOrStep: TaskSpec | TaskStep,\n    shell: string | string[],\n  ) {\n    // no condition, carry on\n    if (!taskOrStep.condition) {\n      return true;\n    }\n\n    this.log(gray(`${underline(\"condition\")}: ${taskOrStep.condition}`));\n    const result = await this.shell({\n      command: taskOrStep.condition,\n      quiet: true,\n      shell,\n    });\n    if (result.status === 0) {\n      return true;\n    } else {\n      return false;\n    }\n  }\n\n  /**\n   * Evaluates environment variables from shell commands (e.g. `$(xx)`)\n   */\n  private async evalEnvironment(\n    env: { [name: string]: string },\n    shell: string | string[],\n  ) {\n    const output: { [name: string]: string | undefined } = {};\n\n    for (const [key, value] of Object.entries(env ?? {})) {\n      if (String(value).startsWith(\"$(\") && String(value).endsWith(\")\")) {\n        const query = value.substring(2, value.length - 1);\n        const result = await this.shell({\n          command: query,\n          quiet: true,\n          captureOutput: true,\n          shell,\n        });\n        if (result.status !== 0) {\n          const error = result.error\n            ? result.error.stack\n            : result.stderr?.toString().trim() ||\n              result.stdout?.toString().trim() ||\n              `command exited with code ${result.status}`;\n\n          logging.warn(\n            this.fmtLog(\n              `${underline(key)}: unable to evaluate \"${query}\". Environment variable will be skipped. Check that the command exists and runs successfully.`,\n            ),\n          );\n          logging.warn(this.fmtLog(`${underline(key)}: ${error}`));\n        } else {\n          output[key] = result.stdout?.toString(\"utf-8\").trim() ?? \"\";\n        }\n      } else {\n        output[key] = value;\n      }\n    }\n    return output;\n  }\n\n  /**\n   * Renders the runtime environment for a task. Namely, it supports this syntax\n   * `$(xx)` for allowing environment to be evaluated by executing a shell\n   * command and obtaining its result.\n   */\n  private async resolveEnvironment(\n    envParam: { [name: string]: string },\n    parents: string[],\n    shell: string | string[],\n  ) {\n    let env = this.runtime.manifest.env ?? {};\n\n    // add env from all parent tasks one by one\n    for (const parent of parents) {\n      env = {\n        ...env,\n        ...(this.runtime.tryFindTask(parent)?.env ?? {}),\n      };\n    }\n\n    // apply task environment, then the specific env last\n    env = {\n      ...env,\n      ...(this.task.env ?? {}),\n      ...envParam,\n    };\n\n    return this.evalEnvironment(env, shell);\n  }\n\n  /**\n   * Resolves the shell for a step's command (or the task's, when no step is\n   * given): step, then task, then project default, then \"projen\".\n   */\n  private resolveShell(step?: TaskStep): string | string[] {\n    return (\n      step?.shell ?? this.task.shell ?? this.runtime.manifest.shell ?? \"projen\"\n    );\n  }\n\n  /**\n   * Returns the \"full name\" of the task which includes all it's parent task names concatenated by chevrons.\n   */\n  private get fullname() {\n    return [...this.parents, this.task.name].join(\" » \");\n  }\n\n  private log(...args: any[]) {\n    logging.verbose(this.fmtLog(...args));\n  }\n\n  private logDebug(...args: any[]) {\n    logging.debug(this.fmtLog(...args));\n  }\n\n  private fmtLog(...args: any[]) {\n    return format(`${underline(this.fullname)} |`, ...args);\n  }\n\n  private async shell(options: ShellOptions): Promise<ShellResult> {\n    const quiet = options.quiet ?? false;\n    if (!quiet) {\n      const log = new Array<string>();\n\n      log.push(\n        Array.isArray(options.command)\n          ? options.command.join(\" \")\n          : options.command,\n      );\n\n      if (options.cwd) {\n        log.push(`(cwd: ${options.cwd})`);\n      }\n\n      this.log(log.join(\" \"));\n    }\n\n    const cwd = options.cwd ?? this.workdir;\n    if (!existsSync(cwd) || !statSync(cwd).isDirectory()) {\n      throw new Error(\n        `invalid workdir (cwd): ${cwd} must be an existing directory`,\n      );\n    }\n\n    // The resolved shell is one of:\n    // - \"projen\" (default): dax's in-process cross-platform shell, so POSIX-style\n    //   task syntax (`mkdir -p`, `&&`, `$VAR`, ...) works the same everywhere.\n    // - \"system\": the host's native shell (`/bin/sh`, or `cmd.exe` on Windows).\n    // - an argv, e.g. [\"bash\",\"-c\"]: a shell invocation with the command appended\n    //   as its final argument.\n    const shell = options.shell ?? \"projen\";\n    if (typeof shell === \"string\" && shell !== \"projen\" && shell !== \"system\") {\n      throw new Error(\n        `unknown built-in shell ${JSON.stringify(\n          shell,\n        )}; use the built-in \"projen\" or \"system\" shells, or a TaskShell.command([...]) invocation`,\n      );\n    }\n\n    const capture = options.captureOutput ?? false;\n    // Quiet captures (`$(...)`, conditions) stay silent; visible captures\n    // (`outputEnv`) stream live while still buffering.\n    const stream = capture && !quiet;\n\n    const command = options.command;\n    const env = {\n      ...process.env,\n      ...this.env,\n      ...options.extraEnv,\n    };\n\n    // \"system\": the host-native engine. A string command runs through the OS\n    // shell; an `execArgs` argv is spawned directly (shell-free), so the real\n    // binary runs with no dax built-ins. (Only `$(...)`/condition eval captures,\n    // and those always pass a string, so an array command never needs capture.)\n    if (shell === \"system\") {\n      if (Array.isArray(command)) {\n        const [program, ...args] = command;\n        try {\n          tool(program).run(args, { cwd, env, inheritStdio: true });\n          return { status: 0 };\n        } catch (e: any) {\n          if (typeof e?.status === \"number\") {\n            return { status: e.status };\n          }\n          throw e;\n        }\n      }\n      return systemShell(command, { cwd, env, capture, stream });\n    }\n\n    // Otherwise run through dax: the \"projen\" shell or an explicit invocation.\n    const builder = this.buildDaxCommand(command, shell);\n\n    // `inheritPiped` streams and buffers; `piped` buffers quietly. stderr is\n    // buffered only for quiet captures, so it can surface in errors.\n    const stdoutMode = capture\n      ? stream\n        ? \"inheritPiped\"\n        : \"piped\"\n      : \"inherit\";\n    const stderrMode = capture && !stream ? \"piped\" : \"inherit\";\n\n    let result;\n    try {\n      result = await builder\n        .cwd(cwd)\n        .env(env)\n        .stdout(stdoutMode)\n        .stderr(stderrMode)\n        .noThrow();\n    } catch (e) {\n      // dax's in-process shell throws a terse `Not implemented: ...` for shell\n      // syntax it does not support (e.g. `$(...)` command substitution); turn\n      // that into an actionable error that points at the system-shell escape\n      // hatch. Other errors pass through unchanged.\n      throw enrichBuiltinShellError(e, command);\n    }\n\n    return {\n      status: result.code,\n      stdout: capture ? Buffer.from(result.stdoutBytes) : null,\n      stderr: capture && !stream ? Buffer.from(result.stderrBytes) : null,\n    };\n  }\n\n  /**\n   * Builds the dax command for the \"projen\" shell or an explicit invocation.\n   * (The \"system\" shell is handled host-side, not here.) `command` is a shell\n   * line (string) or an `execArgs` argv (string[]); `shell` is `\"projen\"` or an\n   * invocation argv such as `[\"bash\", \"-c\"]`.\n   */\n  private buildDaxCommand(\n    command: string | string[],\n    shell: string | string[],\n  ) {\n    // An invocation (e.g. [\"bash\",\"-c\"], [\"npx\",\"--no\",\"-c\"]): append the\n    // command as its final argument. A string is appended as-is; an `execArgs`\n    // argv is rendered to a quoted command line so the shell re-parses the same\n    // argv. That rendering assumes a POSIX-style shell, which is what such an\n    // invocation is (`bash -c`, `sh -c`, `npx -c`, ...).\n    if (Array.isArray(shell)) {\n      const [program, ...flags] = shell;\n      const commandLine = Array.isArray(command)\n        ? escapeCommand(command)\n        : command;\n      return $`${program} ${[...flags, commandLine]}`;\n    }\n\n    // The built-in \"projen\" shell (dax).\n    return Array.isArray(command)\n      ? // execArgs: shell-free argv (each element escaped; `.cmd` shims resolved).\n        $`${command[0]} ${command.slice(1)}`\n      : // string command, parsed in-process by dax's cross-platform shell.\n        $.raw`${command}`;\n  }\n\n  private renderBuiltin(builtin: string) {\n    // Locate projen's package root by walking up from this module's directory\n    // until we find a package.json. This works whether the code runs from the\n    // compiled file (lib/cli/task-runtime.js) or from the bundled run-task.cjs\n    // (lib/run-task.cjs), which live at different depths - so a hard-coded\n    // relative path to package.json would be wrong in one of the two cases.\n    let moduleRoot = __dirname;\n    while (!existsSync(join(moduleRoot, \"package.json\"))) {\n      const parent = dirname(moduleRoot);\n      if (parent === moduleRoot) {\n        throw new Error(\"unable to locate the projen package root\");\n      }\n      moduleRoot = parent;\n    }\n    const program = require.resolve(\n      join(moduleRoot, \"lib\", `${builtin}.task.js`),\n    );\n    return `\"${process.execPath}\" \"${program}\"`;\n  }\n}\n\ninterface ShellOptions {\n  /**\n   * The command to run. A string is executed as a shell command line; a\n   * string array is an explicit argv (program + arguments) executed without a\n   * shell.\n   */\n  readonly command: string | string[];\n  /**\n   * @default - project dir\n   */\n  readonly cwd?: string;\n  /**\n   * Capture stdout/stderr (so the caller can read them from the result)\n   * instead of inheriting the parent's streams.\n   *\n   * @default false\n   */\n  readonly captureOutput?: boolean;\n  /** @default false */\n  readonly quiet?: boolean;\n  readonly extraEnv?: { [name: string]: string | undefined };\n  /**\n   * The resolved shell to interpret the command (e.g. \"projen\", \"bash -c\").\n   * @default \"projen\"\n   */\n  readonly shell?: string | string[];\n}\n\n/**\n * Normalized result of running a command through the system shell (a subset of\n * node's `SpawnSyncReturns`).\n */\nexport interface SystemShellResult {\n  /** Exit code, or `null` if terminated by a signal or never spawned. */\n  readonly status: number | null;\n  /** Captured stdout, or `null` when stdout was inherited. */\n  readonly stdout: Buffer | null;\n  /** Captured stderr, or `null` when stderr was inherited. */\n  readonly stderr: Buffer | null;\n  /** An error raised while attempting to spawn (not a non-zero exit). */\n  readonly error?: Error;\n}\n\n/**\n * Runs a command line through the operating system's native shell.\n *\n * Calls the OS shell via `child_process` with `shell: true`.\n * This backs the `system` task shell, which lets a user opt out of the built-in\n * cross-platform shell and use the host's native shell instead:\n * `/bin/sh`on POSIX and `cmd.exe` on Windows.\n *\n * Never throws for a non-zero exit (that is reported via `status`);\n * a spawn failure is reported via `error`. The caller supplies the full `env`.\n */\nexport function systemShell(\n  command: string,\n  options: {\n    cwd: string;\n    env?: NodeJS.ProcessEnv;\n    capture?: boolean;\n    stream?: boolean;\n  },\n): SystemShellResult {\n  logging.debug(`${command} (cwd: ${options.cwd})`);\n  const result = child_process.spawnSync(command, {\n    cwd: options.cwd,\n    shell: true,\n    maxBuffer: MAX_BUFFER,\n    env: options.env,\n    // Quiet capture buffers stderr for error messages. Streamed capture\n    // inherits stderr and re-emits buffered stdout afterwards, since spawnSync\n    // can't both show and buffer the same stream at once.\n    stdio: options.capture\n      ? options.stream\n        ? [\"inherit\", \"pipe\", \"inherit\"]\n        : [\"inherit\", \"pipe\", \"pipe\"]\n      : \"inherit\",\n  });\n  if (options.capture && options.stream && result.stdout) {\n    process.stdout.write(result.stdout);\n  }\n  return {\n    status: result.status,\n    stdout: result.stdout ?? null,\n    stderr: result.stderr ?? null,\n    error: result.error,\n  };\n}\n"]}