111 lines
3.6 KiB
JavaScript
111 lines
3.6 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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const eslint_utils_1 = require("@eslint-community/eslint-utils");
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const DOM_MANIPULATING_METHODS = new Set([
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'appendChild',
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'insertBefore',
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'normalize',
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'removeChild',
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'replaceChild',
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'after',
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'append',
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'before',
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'insertAdjacentElement',
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'insertAdjacentHTML',
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'insertAdjacentText',
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'prepend',
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'remove',
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'replaceChildren',
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'replaceWith'
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]);
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const DOM_MANIPULATING_PROPERTIES = new Set([
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'textContent',
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'innerHTML',
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'outerHTML',
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'innerText',
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'outerText'
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]);
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exports.default = (0, utils_1.createRule)('no-dom-manipulating', {
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meta: {
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docs: {
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description: 'disallow DOM manipulating',
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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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disallowManipulateDOM: "Don't manipulate the DOM directly. The Svelte runtime can get confused if there is a difference between the actual DOM and the DOM expected by the Svelte runtime."
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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 domVariables = new Set();
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function verifyIdentifier(node) {
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const member = node.parent;
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if (member?.type !== 'MemberExpression' || member.object !== node) {
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return;
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}
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const name = (0, eslint_utils_1.getPropertyName)(member);
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if (!name) {
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return;
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}
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let target = member;
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let parent = target.parent;
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while (parent?.type === 'ChainExpression') {
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target = parent;
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parent = parent.parent;
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}
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if (!parent) {
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return;
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}
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if (parent.type === 'CallExpression') {
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if (parent.callee !== target || !DOM_MANIPULATING_METHODS.has(name)) {
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return;
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}
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}
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else if (parent.type === 'AssignmentExpression') {
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if (parent.left !== target || !DOM_MANIPULATING_PROPERTIES.has(name)) {
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return;
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}
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}
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else {
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return;
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}
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context.report({
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node: member,
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messageId: 'disallowManipulateDOM'
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});
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}
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return {
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"SvelteDirective[kind='Binding']"(node) {
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if (node.key.name.name !== 'this' ||
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!node.expression ||
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node.expression.type !== 'Identifier') {
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return;
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}
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const element = node.parent.parent;
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if (element.type !== 'SvelteElement' || !isHTMLElement(element)) {
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return;
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}
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const variable = (0, ast_utils_1.findVariable)(context, node.expression);
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if (!variable || (variable.scope.type !== 'module' && variable.scope.type !== 'global')) {
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return;
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}
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domVariables.add(variable);
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},
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'Program:exit'() {
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for (const variable of domVariables) {
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for (const reference of variable.references) {
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verifyIdentifier(reference.identifier);
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}
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}
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}
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};
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function isHTMLElement(node) {
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return (node.kind === 'html' || (node.kind === 'special' && (0, ast_utils_1.getNodeName)(node) === 'svelte:element'));
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}
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}
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});
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