postinstall.js

"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);
              if (
                  !desc ||
                  ("get" in desc
                      ? !m.__esModule
                      : desc.writable || desc.configurable)
              ) {
                  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 (mod) {
        if (mod && mod.__esModule) return mod;
        var result = {};
        if (mod != null)
            for (var k in mod)
                if (
                    k !== "default" &&
                    Object.prototype.hasOwnProperty.call(mod, k)
                )
                    __createBinding(result, mod, k);
        __setModuleDefault(result, mod);
        return result;
    };
var __awaiter =
    (this && this.__awaiter) ||
    function (thisArg, _arguments, P, generator) {
        function adopt(value) {
            return value instanceof P
                ? value
                : new P(function (resolve) {
                      resolve(value);
                  });
        }
        return new (P || (P = Promise))(function (resolve, reject) {
            function fulfilled(value) {
                try {
                    step(generator.next(value));
                } catch (e) {
                    reject(e);
                }
            }
            function rejected(value) {
                try {
                    step(generator["throw"](value));
                } catch (e) {
                    reject(e);
                }
            }
            function step(result) {
                result.done
                    ? resolve(result.value)
                    : adopt(result.value).then(fulfilled, rejected);
            }
            step(
                (generator = generator.apply(thisArg, _arguments || [])).next()
            );
        });
    };
Object.defineProperty(exports, "__esModule", { value: true });
/**
 * A postinstall script runs after `@swc/core` is installed.
 *
 * It checks if corresponding optional dependencies for native binary is installed and can be loaded properly.
 * If it fails, it'll internally try to install `@swc/wasm` as fallback.
 */
const fs_1 = require("fs");
const assert = __importStar(require("assert"));
const path = __importStar(require("path"));
const child_process = __importStar(require("child_process"));
const fs = __importStar(require("fs"));
function removeRecursive(dir) {
    for (const entry of fs.readdirSync(dir)) {
        const entryPath = path.join(dir, entry);
        let stats;
        try {
            stats = fs.lstatSync(entryPath);
        } catch (_a) {
            continue; // Guard against https://github.com/nodejs/node/issues/4760
        }
        if (stats.isDirectory()) removeRecursive(entryPath);
        else fs.unlinkSync(entryPath);
    }
    fs.rmdirSync(dir);
}
/**
 * Trying to validate @swc/core's native binary installation, then installs if it is not supported.
 */
const validateBinary = () =>
    __awaiter(void 0, void 0, void 0, function* () {
        var _a;
        try {
            const { name } = require(path.resolve(
                process.env.INIT_CWD,
                "package.json"
            ));
            if (name === "@swc/core") {
                return;
            }
        } catch (_) {
            return;
        }
        // TODO: We do not take care of the case if user try to install with `--no-optional`.
        // For now, it is considered as deliberate decision.
        let binding;
        try {
            binding = require("./binding");
            // Check if binding binary actually works.
            // For the latest version, checks target triple. If it's old version doesn't have target triple, use parseSync instead.
            const triple = binding.getTargetTriple
                ? binding.getTargetTriple()
                : binding.parseSync(
                      "console.log()",
                      Buffer.from(JSON.stringify({ syntax: "ecmascript" }))
                  );
            assert.ok(
                triple,
                "Failed to read target triple from native binary."
            );
        } catch (error) {
            // if error is unsupported architecture, ignore to display.
            if (
                !((_a = error.message) === null || _a === void 0
                    ? void 0
                    : _a.includes("Unsupported architecture"))
            ) {
                console.warn(error);
            }
            console.warn(
                `@swc/core was not able to resolve native bindings installation. It'll try to use @swc/wasm as fallback instead.`
            );
        }
        if (!!binding) {
            return;
        }
        // User choose to override the binary installation. Skip remanining validation.
        if (!!process.env["SWC_BINARY_PATH"]) {
            console.warn(
                `@swc/core could not resolve native bindings installation, but found manual override config SWC_BINARY_PATH specified. Skipping remaning validation.`
            );
            return;
        }
        // Check if top-level package.json installs @swc/wasm separately already
        let wasmBinding;
        try {
            wasmBinding = require.resolve(`@swc/wasm`);
        } catch (_) {}
        if (!!wasmBinding && (0, fs_1.existsSync)(wasmBinding)) {
            return;
        }
        const env = Object.assign(Object.assign({}, process.env), {
            npm_config_global: undefined,
        });
        const { version } = require(path.join(
            path.dirname(require.resolve("@swc/core")),
            "package.json"
        ));
        // We want to place @swc/wasm next to the @swc/core as if normal installation was done,
        // but can't directly set cwd to INIT_CWD as npm seems to acquire lock to the working dir.
        // Instead, create a temporary inner and move it out.
        const coreDir = path.dirname(require.resolve("@swc/core"));
        const installDir = path.join(coreDir, "npm-install");
        try {
            fs.mkdirSync(installDir);
            fs.writeFileSync(path.join(installDir, "package.json"), "{}");
            // Instead of carrying over own dependencies to download & resolve package which increases installation sizes of `@swc/core`,
            // assume & relies on system's npm installation.
            child_process.execSync(
                `npm install --no-save --loglevel=error --prefer-offline --no-audit --progress=false @swc/wasm@${version}`,
                { cwd: installDir, stdio: "pipe", env }
            );
            const installedBinPath = path.join(
                installDir,
                "node_modules",
                `@swc/wasm`
            );
            // INIT_CWD is injected via npm. If it doesn't exists, can't proceed.
            fs.renameSync(
                installedBinPath,
                path.resolve(process.env.INIT_CWD, "node_modules", `@swc/wasm`)
            );
        } catch (error) {
            console.error(error);
            console.error(`Failed to install fallback @swc/wasm@${version}. @swc/core will not properly.
Please install @swc/wasm manually, or retry whole installation.
If there are unexpected errors, please report at https://github.com/swc-project/swc/issues`);
        } finally {
            try {
                removeRecursive(installDir);
            } catch (_) {
                // Gracefully ignore any failures. This'll make few leftover files but it shouldn't block installation.
            }
        }
    });
validateBinary().catch((error) => {
    // for now just throw the error as-is.
    throw error;
});