blob: 2521c99b0e96ed8e41f92810fb67ad94f40ca461 [file] [log] [blame]
'use strict';
module.exports = {
meta: {
docs: {}
},
create: function (context) {
function checkDeclaration(node) {
const kind = node.kind;
if (kind === 'var' || kind === 'let') {
context.report(node, `Exporting mutable '${kind}' binding, use 'const' instead.`);
}
}
function checkDeclarationsInScope(_ref, name) {
let variables = _ref.variables;
for (let variable of variables) {
if (variable.name === name) {
for (let def of variable.defs) {
if (def.type === 'Variable' && def.parent) {
checkDeclaration(def.parent);
}
}
}
}
}
function handleExportDefault(node) {
const scope = context.getScope();
if (node.declaration.name) {
checkDeclarationsInScope(scope, node.declaration.name);
}
}
function handleExportNamed(node) {
const scope = context.getScope();
if (node.declaration) {
checkDeclaration(node.declaration);
} else if (!node.source) {
for (let specifier of node.specifiers) {
checkDeclarationsInScope(scope, specifier.local.name);
}
}
}
return {
'ExportDefaultDeclaration': handleExportDefault,
'ExportNamedDeclaration': handleExportNamed
};
}
};
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