| /** |
| * @fileoverview Rule to check for implicit global variables and functions. |
| * @author Joshua Peek |
| */ |
| |
| "use strict"; |
| |
| //------------------------------------------------------------------------------ |
| // Rule Definition |
| //------------------------------------------------------------------------------ |
| |
| module.exports = { |
| meta: { |
| type: "suggestion", |
| |
| docs: { |
| description: "disallow variable and `function` declarations in the global scope", |
| category: "Best Practices", |
| recommended: false, |
| url: "https://eslint.org/docs/rules/no-implicit-globals" |
| }, |
| |
| schema: [] |
| }, |
| |
| create(context) { |
| return { |
| Program() { |
| const scope = context.getScope(); |
| |
| scope.variables.forEach(variable => { |
| if (variable.writeable) { |
| return; |
| } |
| |
| variable.defs.forEach(def => { |
| if (def.type === "FunctionName" || (def.type === "Variable" && def.parent.kind === "var")) { |
| context.report({ node: def.node, message: "Implicit global variable, assign as global property instead." }); |
| } |
| }); |
| }); |
| |
| scope.implicit.variables.forEach(variable => { |
| const scopeVariable = scope.set.get(variable.name); |
| |
| if (scopeVariable && scopeVariable.writeable) { |
| return; |
| } |
| |
| variable.defs.forEach(def => { |
| context.report({ node: def.node, message: "Implicit global variable, assign as global property instead." }); |
| }); |
| }); |
| } |
| }; |
| |
| } |
| }; |