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