import-maps-webpack-plugin/lib/helpers.js

A plugin for providing static import maps support to Webpack.

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.resolveImportMap = exports.getImportFor = exports.getHashFor = exports.getPackageDir = void 0;
var fs_1 = require("fs");
var path_1 = require("path");
function getSourcePath(root, file) {
    return "../" + path_1.relative(root, file);
}
function resolvePath(root, dir, file) {
    if (file.startsWith('/')) {
        return getSourcePath(root, "." + file);
    }
    else {
        return getSourcePath(root, path_1.resolve(dir, file));
    }
}
function getPackageJson(dir) {
    if (dir) {
        var path = path_1.resolve(dir, 'package.json');
        return require(path);
    }
    return {};
}
function getPackageDir(dir) {
    var path = path_1.resolve(dir, 'package.json');
    if (fs_1.existsSync(path)) {
        return dir;
    }
    var upper = path_1.resolve(dir, '..');
    if (upper !== dir) {
        return getPackageDir(upper);
    }
    return undefined;
}
exports.getPackageDir = getPackageDir;
function getHashFor(root, dir, file) {
    if (!file.startsWith('http:') && !file.startsWith('https:')) {
        var path = resolvePath(root, dir, file);
        return "require.resolveWeak(" + JSON.stringify(path) + ")";
    }
    else {
        return JSON.stringify(file);
    }
}
exports.getHashFor = getHashFor;
function getImportFor(root, dir, file) {
    if (!file.startsWith('http:') && !file.startsWith('https:')) {
        var path = resolvePath(root, dir, file);
        return "import(" + JSON.stringify(path) + ")";
    }
    else {
        return "new Promise((resolve, reject) => {\n      const xhr = new XMLHttpRequest();\n      xhr.open(\"GET\", " + JSON.stringify(file) + ");\n      xhr.onreadystatechange = function() {\n        if (xhr.readyState === 4) {\n          if (xhr.status === 200) {\n            const result = {\n              exports: {},\n            };\n            const f = new Function('module', 'exports', 'require', xhr.responseText);\n            f(result, result.exports, require);\n            resolve(result.exports);\n          } else {\n            reject(xhr.statusText);\n          }\n        }\n      };\n      xhr.send();\n    })";
    }
}
exports.getImportFor = getImportFor;
function resolveImportMap(dir) {
    var pckg = getPackageJson(dir);
    var map = pckg.importmap;
    if (typeof map === 'string') {
        var target = path_1.resolve(dir, map);
        if (fs_1.existsSync(target)) {
            return require(target);
        }
        else {
            console.warn("Could not find the referenced import maps \"" + map + "\" from " + dir + ". Skipping.");
        }
    }
    else if (typeof map === 'object') {
        return map;
    }
    return undefined;
}
exports.resolveImportMap = resolveImportMap;
//# sourceMappingURL=helpers.js.map