v3 new release (#80)

node_modules/yargs/build/lib/apply-extends.js

@@ -0,0 +1,65 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.applyExtends = void 0;
+const fs = require("fs");
+const path = require("path");
+const yerror_1 = require("./yerror");
+let previouslyVisitedConfigs = [];
+function checkForCircularExtends(cfgPath) {
+    if (previouslyVisitedConfigs.indexOf(cfgPath) > -1) {
+        throw new yerror_1.YError(`Circular extended configurations: '${cfgPath}'.`);
+    }
+}
+function getPathToDefaultConfig(cwd, pathToExtend) {
+    return path.resolve(cwd, pathToExtend);
+}
+function mergeDeep(config1, config2) {
+    const target = {};
+    function isObject(obj) {
+        return obj && typeof obj === 'object' && !Array.isArray(obj);
+    }
+    Object.assign(target, config1);
+    for (const key of Object.keys(config2)) {
+        if (isObject(config2[key]) && isObject(target[key])) {
+            target[key] = mergeDeep(config1[key], config2[key]);
+        }
+        else {
+            target[key] = config2[key];
+        }
+    }
+    return target;
+}
+function applyExtends(config, cwd, mergeExtends = false) {
+    let defaultConfig = {};
+    if (Object.prototype.hasOwnProperty.call(config, 'extends')) {
+        if (typeof config.extends !== 'string')
+            return defaultConfig;
+        const isPath = /\.json|\..*rc$/.test(config.extends);
+        let pathToDefault = null;
+        if (!isPath) {
+            try {
+                pathToDefault = require.resolve(config.extends);
+            }
+            catch (err) {
+                // most likely this simply isn't a module.
+            }
+        }
+        else {
+            pathToDefault = getPathToDefaultConfig(cwd, config.extends);
+        }
+        // maybe the module uses key for some other reason,
+        // err on side of caution.
+        if (!pathToDefault && !isPath)
+            return config;
+        if (!pathToDefault)
+            throw new yerror_1.YError(`Unable to find extended config '${config.extends}' in '${cwd}'.`);
+        checkForCircularExtends(pathToDefault);
+        previouslyVisitedConfigs.push(pathToDefault);
+        defaultConfig = isPath ? JSON.parse(fs.readFileSync(pathToDefault, 'utf8')) : require(config.extends);
+        delete config.extends;
+        defaultConfig = applyExtends(defaultConfig, path.dirname(pathToDefault), mergeExtends);
+    }
+    previouslyVisitedConfigs = [];
+    return mergeExtends ? mergeDeep(defaultConfig, config) : Object.assign({}, defaultConfig, config);
+}
+exports.applyExtends = applyExtends;