eslint-plugin-regexp
Version:
ESLint plugin for finding RegExp mistakes and RegExp style guide violations.
75 lines (74 loc) • 2.59 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
const utils_1 = require("../utils");
const utils_2 = require("../utils/ast-utils/utils");
const mention_1 = require("../utils/mention");
const CONTROL_CHARS = new Map([
[0, "\\0"],
[utils_1.CP_TAB, "\\t"],
[utils_1.CP_LF, "\\n"],
[utils_1.CP_VT, "\\v"],
[utils_1.CP_FF, "\\f"],
[utils_1.CP_CR, "\\r"],
]);
function isRegExpLiteralAt({ node, patternSource }, at) {
if ((0, utils_2.isRegexpLiteral)(node)) {
return true;
}
const replaceRange = patternSource.getReplaceRange(at);
if (replaceRange && replaceRange.type === "RegExp") {
return true;
}
return false;
}
exports.default = (0, utils_1.createRule)("control-character-escape", {
meta: {
docs: {
description: "enforce consistent escaping of control characters",
category: "Best Practices",
recommended: true,
},
fixable: "code",
schema: [],
messages: {
unexpected: "Unexpected control character escape {{actual}}. Use '{{expected}}' instead.",
},
type: "suggestion",
},
create(context) {
function createVisitor(regexpContext) {
const { node, getRegexpLocation, fixReplaceNode } = regexpContext;
return {
onCharacterEnter(cNode) {
if (cNode.parent.type === "CharacterClassRange") {
return;
}
const expectedRaw = CONTROL_CHARS.get(cNode.value);
if (expectedRaw === undefined) {
return;
}
if (cNode.raw === expectedRaw) {
return;
}
if (!isRegExpLiteralAt(regexpContext, cNode) &&
cNode.raw === String.fromCodePoint(cNode.value)) {
return;
}
context.report({
node,
loc: getRegexpLocation(cNode),
messageId: "unexpected",
data: {
actual: (0, mention_1.mentionChar)(cNode),
expected: expectedRaw,
},
fix: fixReplaceNode(cNode, expectedRaw),
});
},
};
}
return (0, utils_1.defineRegexpVisitor)(context, {
createVisitor,
});
},
});