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[dotfiles/.git] / .config / coc / extensions / node_modules / coc-prettier / node_modules / eslint / lib / rules / global-require.js

diff --git a/.config/coc/extensions/node_modules/coc-prettier/node_modules/eslint/lib/rules/global-require.js b/.config/coc/extensions/node_modules/coc-prettier/node_modules/eslint/lib/rules/global-require.js
new file mode 100644 (file)
index 0000000..4af3a6a
--- /dev/null
+++ b/.config/coc/extensions/node_modules/coc-prettier/node_modules/eslint/lib/rules/global-require.js
@@ -0,0 +1,81 @@
+/**
+ * @fileoverview Rule for disallowing require() outside of the top-level module context
+ * @author Jamund Ferguson
+ */
+
+"use strict";
+
+const ACCEPTABLE_PARENTS = [
+    "AssignmentExpression",
+    "VariableDeclarator",
+    "MemberExpression",
+    "ExpressionStatement",
+    "CallExpression",
+    "ConditionalExpression",
+    "Program",
+    "VariableDeclaration"
+];
+
+/**
+ * Finds the eslint-scope reference in the given scope.
+ * @param {Object} scope The scope to search.
+ * @param {ASTNode} node The identifier node.
+ * @returns {Reference|null} Returns the found reference or null if none were found.
+ */
+function findReference(scope, node) {
+    const references = scope.references.filter(reference => reference.identifier.range[0] === node.range[0] &&
+            reference.identifier.range[1] === node.range[1]);
+
+    /* istanbul ignore else: correctly returns null */
+    if (references.length === 1) {
+        return references[0];
+    }
+    return null;
+
+}
+
+/**
+ * Checks if the given identifier node is shadowed in the given scope.
+ * @param {Object} scope The current scope.
+ * @param {ASTNode} node The identifier node to check.
+ * @returns {boolean} Whether or not the name is shadowed.
+ */
+function isShadowed(scope, node) {
+    const reference = findReference(scope, node);
+
+    return reference && reference.resolved && reference.resolved.defs.length > 0;
+}
+
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "require `require()` calls to be placed at top-level module scope",
+            category: "Node.js and CommonJS",
+            recommended: false,
+            url: "https://eslint.org/docs/rules/global-require"
+        },
+
+        schema: [],
+        messages: {
+            unexpected: "Unexpected require()."
+        }
+    },
+
+    create(context) {
+        return {
+            CallExpression(node) {
+                const currentScope = context.getScope();
+
+                if (node.callee.name === "require" && !isShadowed(currentScope, node.callee)) {
+                    const isGoodRequire = context.getAncestors().every(parent => ACCEPTABLE_PARENTS.indexOf(parent.type) > -1);
+
+                    if (!isGoodRequire) {
+                        context.report({ node, messageId: "unexpected" });
+                    }
+                }
+            }
+        };
+    }
+};