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8 Commits

Author SHA1 Message Date
Anders Kaseorg 0042cf51c1 eslint: Fix unicorn/better-regex. 
https://github.com/sindresorhus/eslint-plugin-unicorn/blob/master/docs/rules/better-regex.md

Signed-off-by: Anders Kaseorg <anders@zulip.com>
 2020-10-07 16:00:33 -07:00
Anders Kaseorg b178fc6069 eslint: Fix unicorn/prefer-set-has. 
https://github.com/sindresorhus/eslint-plugin-unicorn/blob/master/docs/rules/prefer-set-has.md

Signed-off-by: Anders Kaseorg <anders@zulip.com>
 2020-10-07 16:00:33 -07:00
Anders Kaseorg 719546641f js: Convert a.indexOf(…) !== -1 to a.includes(…). 
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>
 2020-02-10 14:08:12 -08:00
Anders Kaseorg 28f3dfa284 js: Automatically convert var to let and const in most files. 
This commit was originally automatically generated using `tools/lint
--only=eslint --fix`.  It was then modified by tabbott to contain only
changes to a set of files that are unlikely to result in significant
merge conflicts with any open pull request, excluding about 20 files.
His plan is to merge the remaining changes with more precise care,
potentially involving merging parts of conflicting pull requests
before running the `eslint --fix` operation.

Signed-off-by: Anders Kaseorg <anders@zulipchat.com>
 2019-11-03 12:42:39 -08:00
Anders Kaseorg d17b577d0c js: Purge useless IIFEs. 
With webpack, variables declared in each file are already file-local
(Global variables need to be explicitly exported), so these IIFEs are
no longer needed.

Signed-off-by: Anders Kaseorg <andersk@mit.edu>
 2019-10-25 13:51:21 -07:00
Yashashvi Dave 371343709b static/js/common: Extract function `has_mac_keyboard`. 2019-06-24 14:04:42 -07:00
Adarsh Patel c886b53a3d help: Fix rendering correct OS-specific docs. 
This fixes #11279, a bug where the OS-specific docs did not correctly
select the Uuser's OS tab as active when clicked from the left sidebar
of /help/.
 2019-01-14 14:34:04 -08:00
Eeshan Garg ecd4f821be user docs: Automatically activate correct tab for OS-specific instructions. 2018-09-18 13:49:34 -07:00