/**
|
* @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." });
|
});
|
});
|
}
|
};
|
|
}
|
};
|
