104 lines
4.4 KiB
Plaintext
104 lines
4.4 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 eslint_utils_1 = require("@typescript-eslint/utils/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: 'no-non-null-assertion',
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meta: {
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type: 'problem',
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docs: {
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description: 'Disallow non-null assertions using the `!` postfix operator',
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recommended: 'strict',
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},
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hasSuggestions: true,
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messages: {
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noNonNull: 'Forbidden non-null assertion.',
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suggestOptionalChain: 'Consider using the optional chain operator `?.` instead. This operator includes runtime checks, so it is safer than the compile-only non-null assertion operator.',
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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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const sourceCode = (0, eslint_utils_1.getSourceCode)(context);
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return {
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TSNonNullExpression(node) {
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const suggest = [];
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// it always exists in non-null assertion
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const nonNullOperator = sourceCode.getTokenAfter(node.expression, util_1.isNonNullAssertionPunctuator);
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function replaceTokenWithOptional() {
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return fixer => fixer.replaceText(nonNullOperator, '?.');
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}
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function removeToken() {
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return fixer => fixer.remove(nonNullOperator);
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}
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if (node.parent.type === utils_1.AST_NODE_TYPES.MemberExpression &&
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node.parent.object === node) {
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if (!node.parent.optional) {
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if (node.parent.computed) {
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// it is x![y]?.z
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suggest.push({
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messageId: 'suggestOptionalChain',
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fix: replaceTokenWithOptional(),
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});
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}
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else {
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// it is x!.y?.z
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suggest.push({
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messageId: 'suggestOptionalChain',
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fix(fixer) {
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// x!.y?.z
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// ^ punctuator
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const punctuator = sourceCode.getTokenAfter(nonNullOperator);
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return [
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fixer.remove(nonNullOperator),
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fixer.insertTextBefore(punctuator, '?'),
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];
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},
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});
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}
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}
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else {
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if (node.parent.computed) {
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// it is x!?.[y].z
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suggest.push({
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messageId: 'suggestOptionalChain',
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fix: removeToken(),
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});
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}
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else {
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// it is x!?.y.z
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suggest.push({
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messageId: 'suggestOptionalChain',
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fix: removeToken(),
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});
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}
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}
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}
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else if (node.parent.type === utils_1.AST_NODE_TYPES.CallExpression &&
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node.parent.callee === node) {
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if (!node.parent.optional) {
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// it is x.y?.z!()
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suggest.push({
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messageId: 'suggestOptionalChain',
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fix: replaceTokenWithOptional(),
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});
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}
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else {
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// it is x.y.z!?.()
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suggest.push({
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messageId: 'suggestOptionalChain',
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fix: removeToken(),
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});
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}
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}
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context.report({
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node,
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messageId: 'noNonNull',
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suggest,
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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=no-non-null-assertion.js.map |