Saving all progress

node_modules/http-proxy-middleware/dist/path-rewriter.js

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+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.createPathRewriter = createPathRewriter;
+const is_plain_object_1 = require("is-plain-object");
+const errors_1 = require("./errors");
+const debug_1 = require("./debug");
+const debug = debug_1.Debug.extend('path-rewriter');
+/**
+ * Create rewrite function, to cache parsed rewrite rules.
+ *
+ * @param {Object} rewriteConfig
+ * @return {Function} Function to rewrite paths; This function should accept `path` (request.url) as parameter
+ */
+function createPathRewriter(rewriteConfig) {
+    let rulesCache;
+    if (!isValidRewriteConfig(rewriteConfig)) {
+        return;
+    }
+    if (typeof rewriteConfig === 'function') {
+        const customRewriteFn = rewriteConfig;
+        return customRewriteFn;
+    }
+    else {
+        rulesCache = parsePathRewriteRules(rewriteConfig);
+        return rewritePath;
+    }
+    function rewritePath(path) {
+        let result = path;
+        for (const rule of rulesCache) {
+            if (rule.regex.test(path)) {
+                result = result.replace(rule.regex, rule.value);
+                debug('rewriting path from "%s" to "%s"', path, result);
+                break;
+            }
+        }
+        return result;
+    }
+}
+function isValidRewriteConfig(rewriteConfig) {
+    if (typeof rewriteConfig === 'function') {
+        return true;
+    }
+    else if ((0, is_plain_object_1.isPlainObject)(rewriteConfig)) {
+        return Object.keys(rewriteConfig).length !== 0;
+    }
+    else if (rewriteConfig === undefined || rewriteConfig === null) {
+        return false;
+    }
+    else {
+        throw new Error(errors_1.ERRORS.ERR_PATH_REWRITER_CONFIG);
+    }
+}
+function parsePathRewriteRules(rewriteConfig) {
+    const rules = [];
+    if ((0, is_plain_object_1.isPlainObject)(rewriteConfig)) {
+        for (const [key, value] of Object.entries(rewriteConfig)) {
+            rules.push({
+                regex: new RegExp(key),
+                value: value,
+            });
+            debug('rewrite rule created: "%s" ~> "%s"', key, value);
+        }
+    }
+    return rules;
+}