70 lines
1.9 KiB
JavaScript
70 lines
1.9 KiB
JavaScript
|
/**
|
||
|
|
* @fileoverview Rule to enforce the use of `u` flag on RegExp.
|
||
|
|
* @author Toru Nagashima
|
||
|
|
*/
|
||
|
|
|
||
|
|
"use strict";
|
||
|
|
|
||
|
|
//------------------------------------------------------------------------------
|
||
|
|
// Requirements
|
||
|
|
//------------------------------------------------------------------------------
|
||
|
|
|
||
|
|
const {
|
||
|
|
CALL,
|
||
|
|
CONSTRUCT,
|
||
|
|
ReferenceTracker,
|
||
|
|
getStringIfConstant
|
||
|
|
} = require("eslint-utils");
|
||
|
|
|
||
|
|
//------------------------------------------------------------------------------
|
||
|
|
// Rule Definition
|
||
|
|
//------------------------------------------------------------------------------
|
||
|
|
|
||
|
|
/** @type {import('../shared/types').Rule} */
|
||
|
|
module.exports = {
|
||
|
|
meta: {
|
||
|
|
type: "suggestion",
|
||
|
|
|
||
|
|
docs: {
|
||
|
|
description: "enforce the use of `u` flag on RegExp",
|
||
|
|
recommended: false,
|
||
|
|
url: "https://eslint.org/docs/rules/require-unicode-regexp"
|
||
|
|
},
|
||
|
|
|
||
|
|
messages: {
|
||
|
|
requireUFlag: "Use the 'u' flag."
|
||
|
|
},
|
||
|
|
|
||
|
|
schema: []
|
||
|
|
},
|
||
|
|
|
||
|
|
create(context) {
|
||
|
|
return {
|
||
|
|
"Literal[regex]"(node) {
|
||
|
|
const flags = node.regex.flags || "";
|
||
|
|
|
||
|
|
if (!flags.includes("u")) {
|
||
|
|
context.report({ node, messageId: "requireUFlag" });
|
||
|
|
}
|
||
|
|
},
|
||
|
|
|
||
|
|
Program() {
|
||
|
|
const scope = context.getScope();
|
||
|
|
const tracker = new ReferenceTracker(scope);
|
||
|
|
const trackMap = {
|
||
|
|
RegExp: { [CALL]: true, [CONSTRUCT]: true }
|
||
|
|
};
|
||
|
|
|
||
|
|
for (const { node } of tracker.iterateGlobalReferences(trackMap)) {
|
||
|
|
const flagsNode = node.arguments[1];
|
||
|
|
const flags = getStringIfConstant(flagsNode, scope);
|
||
|
|
|
||
|
|
if (!flagsNode || (typeof flags === "string" && !flags.includes("u"))) {
|
||
|
|
context.report({ node, messageId: "requireUFlag" });
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
};
|
||
|
|
}
|
||
|
|
};
|