73 lines
2.8 KiB
Plaintext
73 lines
2.8 KiB
Plaintext
"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
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const utils_1 = require("@typescript-eslint/utils");
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const util_1 = require("../util");
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exports.default = (0, util_1.createRule)({
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name: 'prefer-as-const',
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meta: {
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type: 'suggestion',
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docs: {
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description: 'Enforce the use of `as const` over literal type',
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recommended: 'recommended',
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},
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fixable: 'code',
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hasSuggestions: true,
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messages: {
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preferConstAssertion: 'Expected a `const` instead of a literal type assertion.',
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variableConstAssertion: 'Expected a `const` assertion instead of a literal type annotation.',
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variableSuggest: 'You should use `as const` instead of type annotation.',
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},
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schema: [],
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},
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defaultOptions: [],
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create(context) {
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function compareTypes(valueNode, typeNode, canFix) {
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if (valueNode.type === utils_1.AST_NODE_TYPES.Literal &&
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typeNode.type === utils_1.AST_NODE_TYPES.TSLiteralType &&
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'raw' in typeNode.literal &&
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valueNode.raw === typeNode.literal.raw) {
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if (canFix) {
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context.report({
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node: typeNode,
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messageId: 'preferConstAssertion',
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fix: fixer => fixer.replaceText(typeNode, 'const'),
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});
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}
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else {
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context.report({
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node: typeNode,
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messageId: 'variableConstAssertion',
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suggest: [
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{
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messageId: 'variableSuggest',
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fix: (fixer) => [
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fixer.remove(typeNode.parent),
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fixer.insertTextAfter(valueNode, ' as const'),
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],
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},
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],
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});
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}
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}
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}
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return {
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TSAsExpression(node) {
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compareTypes(node.expression, node.typeAnnotation, true);
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},
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TSTypeAssertion(node) {
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compareTypes(node.expression, node.typeAnnotation, true);
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},
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PropertyDefinition(node) {
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if (node.value && node.typeAnnotation) {
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compareTypes(node.value, node.typeAnnotation.typeAnnotation, false);
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}
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},
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VariableDeclarator(node) {
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if (node.init && node.id.typeAnnotation) {
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compareTypes(node.init, node.id.typeAnnotation.typeAnnotation, false);
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}
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},
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};
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},
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});
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//# sourceMappingURL=prefer-as-const.js.map |