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backend/node_modules/stylehacks/src/plugin.js

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+'use strict';
+/**
+ * @typedef {object} Plugin
+ * @prop {Set<string>} targets
+ * @prop {Set<string>} nodeTypes
+ * @prop {(node: import('postcss').Node) => void} detectAndResolve
+ * @prop {(node: import('postcss').Node) => void} detectAndWarn
+ */
+
+/** 
+ * @typedef {import('postcss').Node & {_stylehacks: {
+                                          message: string, 
+                                          browsers: Set<string>, 
+                                          identifier: string, 
+                                          hack: string }}} NodeWithInfo
+ */
+
+module.exports = class BasePlugin {
+  /**
+   * @param {string[]} targets
+   * @param {string[]} nodeTypes
+   * @param {import('postcss').Result=} result
+   */
+  constructor(targets, nodeTypes, result) {
+    /** @type {NodeWithInfo[]} */
+    this.nodes = [];
+    this.targets = new Set(targets);
+    this.nodeTypes = new Set(nodeTypes);
+    this.result = result;
+  }
+
+  /**
+   * @param {import('postcss').Node} node
+   * @param {{identifier: string, hack: string}} metadata
+   * @return {void}
+   */
+  push(node, metadata) {
+    /** @type {NodeWithInfo} */ (node)._stylehacks = Object.assign(
+      {},
+      metadata,
+      {
+        message: `Bad ${metadata.identifier}: ${metadata.hack}`,
+        browsers: this.targets,
+      }
+    );
+
+    this.nodes.push(/** @type {NodeWithInfo} */ (node));
+  }
+
+  /**
+   * @param {import('postcss').Node} node
+   * @return {boolean}
+   */
+  any(node) {
+    if (this.nodeTypes.has(node.type)) {
+      this.detect(node);
+
+      return /** @type {NodeWithInfo} */ (node)._stylehacks !== undefined;
+    }
+
+    return false;
+  }
+
+  /**
+   * @param {import('postcss').Node} node
+   * @return {void}
+   */
+  detectAndResolve(node) {
+    this.nodes = [];
+
+    this.detect(node);
+
+    return this.resolve();
+  }
+
+  /**
+   * @param {import('postcss').Node} node
+   * @return {void}
+   */
+  detectAndWarn(node) {
+    this.nodes = [];
+
+    this.detect(node);
+
+    return this.warn();
+  }
+  /** @param {import('postcss').Node} node */
+  // eslint-disable-next-line no-unused-vars
+  detect(node) {
+    throw new Error('You need to implement this method in a subclass.');
+  }
+
+  /** @return {void} */
+  resolve() {
+    return this.nodes.forEach((node) => node.remove());
+  }
+
+  warn() {
+    return this.nodes.forEach((node) => {
+      const { message, browsers, identifier, hack } = node._stylehacks;
+
+      return node.warn(
+        /** @type {import('postcss').Result} */ (this.result),
+        message + JSON.stringify({ browsers, identifier, hack })
+      );
+    });
+  }
+};