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"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
const utils_1 = require("../utils");
const ast_utils_1 = require("../utils/ast-utils");
const compat_1 = require("../utils/compat");
exports.default = (0, utils_1.createRule)('no-dupe-on-directives', {
meta: {
docs: {
description: 'disallow duplicate `on:` directives',
category: 'Possible Errors',
recommended: false
},
schema: [],
messages: {
duplication: 'This `on:{{type}}` directive is the same and duplicate directives in L{{lineNo}}.'
},
type: 'problem'
},
create(context) {
const sourceCode = (0, compat_1.getSourceCode)(context);
const directiveDataMap = new Map();
return {
SvelteDirective(node) {
if (node.kind !== 'EventHandler')
return;
const directiveDataList = directiveDataMap.get(node.key.name.name);
if (!directiveDataList) {
directiveDataMap.set(node.key.name.name, [
{
expression: node.expression,
nodes: [node]
}
]);
return;
}
const directiveData = directiveDataList.find((data) => {
if (!data.expression || !node.expression) {
return data.expression === node.expression;
}
return (0, ast_utils_1.equalTokens)(data.expression, node.expression, sourceCode);
});
if (!directiveData) {
directiveDataList.push({
expression: node.expression,
nodes: [node]
});
return;
}
directiveData.nodes.push(node);
},
'SvelteStartTag:exit'() {
for (const [type, directiveDataList] of directiveDataMap) {
for (const { nodes } of directiveDataList) {
if (nodes.length < 2) {
continue;
}
for (const node of nodes) {
context.report({
node,
messageId: 'duplication',
data: {
type,
lineNo: String((nodes[0] !== node ? nodes[0] : nodes[1]).loc.start.line)
}
});
}
}
}
directiveDataMap.clear();
}
};
}
});
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