48 lines
1.8 KiB
JavaScript
48 lines
1.8 KiB
JavaScript
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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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exports.default = (0, utils_1.createRule)('valid-each-key', {
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meta: {
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docs: {
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description: 'enforce keys to use variables defined in the `{#each}` block',
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category: 'Best Practices',
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recommended: false
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},
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schema: [],
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messages: {
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keyUseEachVars: 'Expected key to use the variables which are defined by the `{#each}` block.'
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},
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type: 'suggestion'
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},
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create(context) {
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return {
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SvelteEachBlock(node) {
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if (node.key == null) {
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return;
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}
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const scope = (0, ast_utils_1.getScope)(context, node.key);
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for (const variable of scope.variables) {
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if (!variable.defs.some((def) => (node.context.range[0] <= def.name.range[0] &&
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def.name.range[1] <= node.context.range[1]) ||
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(node.index &&
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node.index.range[0] <= def.name.range[0] &&
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def.name.range[1] <= node.index.range[1]))) {
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continue;
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}
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for (const reference of variable.references) {
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if (node.key.range[0] <= reference.identifier.range[0] &&
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reference.identifier.range[1] <= node.key.range[1]) {
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return;
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}
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}
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}
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context.report({
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node: node.key,
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messageId: 'keyUseEachVars'
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});
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}
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};
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}
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});
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