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11 Commits

Author SHA1 Message Date
Anders Kaseorg 02511bff1c js: Automatically convert _.each to for…of. 
This commit was automatically generated by the following script,
followed by lint --fix and a few small manual lint-related cleanups.

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 { Context } from "ast-types/lib/path-visitor";
import K from "ast-types/gen/kinds";
import { NodePath } from "ast-types/lib/node-path";
import assert from "assert";
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);
const checkStatement = (node: n.Node): node is K.StatementKind =>
  n.Statement.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;
  let inLoop = false;
  let replaceReturn = false;

  const visitLoop = (...args: string[]) =>
    function(this: Context, path: NodePath) {
      for (const arg of args) {
        this.visit(path.get(arg));
      }
      const old = { inLoop };
      inLoop = true;
      this.visit(path.get("body"));
      inLoop = old.inLoop;
      return false;
    };

  recast.visit(ast, {
    visitDoWhileStatement: visitLoop("test"),

    visitExpressionStatement(path) {
      const { expression, comments } = path.node;
      let valueOnly;
      if (
        n.CallExpression.check(expression) &&
        n.MemberExpression.check(expression.callee) &&
        !expression.callee.computed &&
        n.Identifier.check(expression.callee.object) &&
        expression.callee.object.name === "_" &&
        n.Identifier.check(expression.callee.property) &&
        ["each", "forEach"].includes(expression.callee.property.name) &&
        [2, 3].includes(expression.arguments.length) &&
        checkExpression(expression.arguments[0]) &&
        (n.FunctionExpression.check(expression.arguments[1]) ||
          n.ArrowFunctionExpression.check(expression.arguments[1])) &&
        [1, 2].includes(expression.arguments[1].params.length) &&
        n.Identifier.check(expression.arguments[1].params[0]) &&
        ((valueOnly = expression.arguments[1].params[1] === undefined) ||
          n.Identifier.check(expression.arguments[1].params[1])) &&
        (expression.arguments[2] === undefined ||
          n.ThisExpression.check(expression.arguments[2]))
      ) {
        const old = { inLoop, replaceReturn };
        inLoop = false;
        replaceReturn = true;
        this.visit(
          path
            .get("expression")
            .get("arguments")
            .get(1)
            .get("body")
        );
        inLoop = old.inLoop;
        replaceReturn = old.replaceReturn;

        const [right, { body, params }] = expression.arguments;
        const loop = b.forOfStatement(
          b.variableDeclaration("let", [
            b.variableDeclarator(
              valueOnly ? params[0] : b.arrayPattern([params[1], params[0]])
            ),
          ]),
          valueOnly
            ? right
            : b.callExpression(
                b.memberExpression(right, b.identifier("entries")),
                []
              ),
          checkStatement(body) ? body : b.expressionStatement(body)
        );
        loop.comments = comments;
        path.replace(loop);
        changed = true;
      }
      this.traverse(path);
    },

    visitForStatement: visitLoop("init", "test", "update"),

    visitForInStatement: visitLoop("left", "right"),

    visitForOfStatement: visitLoop("left", "right"),

    visitFunction(path) {
      this.visit(path.get("params"));
      const old = { replaceReturn };
      replaceReturn = false;
      this.visit(path.get("body"));
      replaceReturn = old.replaceReturn;
      return false;
    },

    visitReturnStatement(path) {
      if (replaceReturn) {
        assert(!inLoop); // could use labeled continue if this ever fires
        const { argument, comments } = path.node;
        if (argument === null) {
          const s = b.continueStatement();
          s.comments = comments;
          path.replace(s);
        } else {
          const s = b.expressionStatement(argument);
          s.comments = comments;
          path.replace(s, b.continueStatement());
        }
        return false;
      }
      this.traverse(path);
    },

    visitWhileStatement: visitLoop("test"),
  });

  if (changed) {
    console.log("Writing", file);
    fs.writeFileSync(file, recast.print(ast).code, { encoding: "utf8" });
  }
}

Signed-off-by: Anders Kaseorg <anders@zulipchat.com>
 2020-02-07 14:09:47 -08:00
Anders Kaseorg de3146c137 js: Replace [...x] with Array.from(x). 
Babel strict generates more code for [...x] than you’d like, while
Babel loose mode assumes x is an array.

Signed-off-by: Anders Kaseorg <anders@zulipchat.com>
 2020-02-05 11:52:52 -08:00
Anders Kaseorg b5cd8dcedd starred_messages: Replace ids Dict with Set. 
Signed-off-by: Anders Kaseorg <anders@zulipchat.com>
 2020-02-02 20:37:41 -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
Thomas Ip a2872c107e typescript: Move TS files into JS directory. 
This is just a code reorganization to avoid making it difficult to
find things as we migrate more file to TypeScript.
 2019-03-25 12:11:37 -07:00
Thomas Ip 7d050ab0cf typescript: Migrate dict.js to typescript. 2019-03-21 10:48:44 -07:00
ruchit2801 9f7e90f68b left sidebar: Add an "unstar all messages" option. 
In this commit, I've added a feature to unstar all the starred
messages.  This is useful, e.g., for folks who are using starred
messages to keep track of things they should come back when next at
their desktop.

The event flow is the standard one for a feature with a confirmation modal:

(1) User clicks on unstar all messages.

(2) We display a confirmation modal; if the user confirms, we send a
request to the backend to clear all starred messages.

(3) The events system sends that UI update back to us, removing the
stars from the UI.

Fixes #11401.
 2019-03-07 20:52:00 -08:00
Steve Howell 9986e41999 top left: Simplify markup for main links. 
The following elements in the top left corner
are major components of our app:

    All messages
    Private messages
    Starred messages
    Mentions

We can now find them directly:

    $('.top_left_all_messages')
    $('.top_left_private_messages')
    $('.top_left_starred_messages')
    $('.top_left_mentions')

Before this, we had to build up complicated selectors
like below:

    exports.get_global_filter_li = function (filter_name) {
        var selector = "#global_filters li[data-name='"
            + filter_name + "']";
        return $(selector);
    };

I don't think any newbie would know to grep for "global_filter",
and I've seen a PR where somebody added specific markup here
to "Private messages" because they couldn't grok the old scheme.

Another thing to note is that we still have a "home-link"
class for "All messages", which overlapped with portico
code that had the same name.  (There were some inaccurate
comments in the code relating to the tab bar, but we don't
actually have a way to click to the home view in the tab
bar any more.)  I'll eliminate that cruft in another commit.

For this commit the four elements still have the
"global-filter" class, since there's some benefit to being
able to style them all as a group, although we should give
it a nicer name in a subsequent commit.

Most of this PR is basic search/replace, but I did add a
two-line helper: `top_left_corner.update_starred_count`
 2019-01-30 13:53:20 -08:00
Joshua Pan 3ec34eda11 display settings: Implement UI for starred_message_counts. 2018-08-21 13:42:23 -07:00
Joshua Pan 2aeabf24a6 frontend: Create data structure for starred messages. 2018-08-21 13:42:23 -07:00