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