mirror of https://github.com/zulip/zulip.git
719546641f
Babel polyfills this for us for Internet Explorer.
import * as babelParser from "recast/parsers/babel";
import * as recast from "recast";
import * as tsParser from "recast/parsers/typescript";
import { builders as b, namedTypes as n } from "ast-types";
import K from "ast-types/gen/kinds";
import fs from "fs";
import path from "path";
import process from "process";
const checkExpression = (node: n.Node): node is K.ExpressionKind =>
n.Expression.check(node);
for (const file of process.argv.slice(2)) {
console.log("Parsing", file);
const ast = recast.parse(fs.readFileSync(file, { encoding: "utf8" }), {
parser: path.extname(file) === ".ts" ? tsParser : babelParser,
});
let changed = false;
recast.visit(ast, {
visitBinaryExpression(path) {
const { operator, left, right } = path.node;
if (
n.CallExpression.check(left) &&
n.MemberExpression.check(left.callee) &&
!left.callee.computed &&
n.Identifier.check(left.callee.property) &&
left.callee.property.name === "indexOf" &&
left.arguments.length === 1 &&
checkExpression(left.arguments[0]) &&
((["===", "!==", "==", "!=", ">", "<="].includes(operator) &&
n.UnaryExpression.check(right) &&
right.operator == "-" &&
n.Literal.check(right.argument) &&
right.argument.value === 1) ||
([">=", "<"].includes(operator) &&
n.Literal.check(right) &&
right.value === 0))
) {
const test = b.callExpression(
b.memberExpression(left.callee.object, b.identifier("includes")),
[left.arguments[0]]
);
path.replace(
["!==", "!=", ">", ">="].includes(operator)
? test
: b.unaryExpression("!", test)
);
changed = true;
}
this.traverse(path);
},
});
if (changed) {
console.log("Writing", file);
fs.writeFileSync(file, recast.print(ast).code, { encoding: "utf8" });
}
}
Signed-off-by: Anders Kaseorg <anders@zulipchat.com>
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| .. | ||
| assets | ||
| audio | ||
| generated | ||
| html | ||
| images | ||
| js | ||
| shared | ||
| styles | ||
| templates | ||
| third | ||
| .eslintrc.json | ||
| .gitignore | ||
| favicon.ico | ||