feat(es/minifier): Implement more rules for optimizing for-if-break (#4140)

crates/swc_ecma_minifier/src/compress/optimize/loops.rs

@@ -134,10 +134,6 @@ where
         }
     }
 
-    pub(super) fn drop_if_break(&mut self, _s: &ForStmt) {
-        if !self.options.loops {}
-    }
-
     ///
     /// - `for (a(), 5; b(); c())` => `for (a(); b(); c())`
     pub(super) fn optimize_init_of_for_stmt(&mut self, s: &mut ForStmt) {

crates/swc_ecma_minifier/src/compress/optimize/mod.rs

@@ -2050,8 +2050,6 @@ where
         s.visit_mut_children_with(&mut *self.with_ctx(ctx));
 
         self.with_ctx(ctx).optimize_init_of_for_stmt(s);
-
-        self.with_ctx(ctx).drop_if_break(s);
     }
 
     #[cfg_attr(feature = "debug", tracing::instrument(skip_all))]

crates/swc_ecma_minifier/src/compress/pure/loops.rs

@@ -44,6 +44,95 @@ impl Pure<'_> {
         }
     }
 
+    /// ## Input
+    /// ```js
+    /// for(; bar();){
+    ///     if (x(), y(), foo()) break;
+    ///     z(), k();
+    /// }
+    /// ```
+    ///
+    /// ## Output
+    ///
+    /// ```js
+    /// for(; bar() && (x(), y(), !foo());)z(), k();
+    /// ```
+    pub(super) fn optimize_for_if_break(&mut self, s: &mut ForStmt) -> Option<()> {
+        if !self.options.loops {
+            return None;
+        }
+
+        if let Stmt::Block(body) = &mut *s.body {
+            let first = body.stmts.get_mut(0)?;
+
+            if let Stmt::If(IfStmt {
+                span,
+                test,
+                cons,
+                alt: None,
+                ..
+            }) = first
+            {
+                if let Stmt::Break(BreakStmt { label: None, .. }) = &**cons {
+                    self.negate(test, false, false);
+
+                    match s.test.as_deref_mut() {
+                        Some(e) => {
+                            let orig_test = e.take();
+                            *e = Expr::Bin(BinExpr {
+                                span: *span,
+                                op: op!("&&"),
+                                left: Box::new(orig_test),
+                                right: test.take(),
+                            });
+                        }
+                        None => {
+                            s.test = Some(test.take());
+                        }
+                    }
+
+                    tracing::debug!("loops: Optimizing a for loop with an if-then-break");
+
+                    first.take();
+                    return None;
+                }
+            }
+
+            if let Stmt::If(IfStmt {
+                span,
+                test,
+                cons,
+                alt: Some(alt),
+                ..
+            }) = first
+            {
+                if let Stmt::Break(BreakStmt { label: None, .. }) = &**alt {
+                    match s.test.as_deref_mut() {
+                        Some(e) => {
+                            let orig_test = e.take();
+                            *e = Expr::Bin(BinExpr {
+                                span: *span,
+                                op: op!("&&"),
+                                left: Box::new(orig_test),
+                                right: test.take(),
+                            });
+                        }
+                        None => {
+                            s.test = Some(test.take());
+                        }
+                    }
+
+                    tracing::debug!("loops: Optimizing a for loop with an if-else-break");
+
+                    *first = *cons.take();
+                    return None;
+                }
+            }
+        }
+
+        None
+    }
+
     /// # Input
     ///
     /// ```js

crates/swc_ecma_minifier/src/compress/pure/mod.rs

@@ -367,6 +367,8 @@ impl VisitMut for Pure<'_> {
     fn visit_mut_for_stmt(&mut self, s: &mut ForStmt) {
         s.visit_mut_children_with(self);
 
+        self.optimize_for_if_break(s);
+
         self.merge_for_if_break(s);
 
         if let Some(test) = &mut s.test {

crates/swc_ecma_minifier/tests/TODO.txt

@@ -526,12 +526,7 @@ labels/labels_7/input.js
 labels/labels_9/input.js
 logical_assignment/assign_in_conditional_part/input.js
 logical_assignment/assignment_in_left_part_2/input.js
-loops/drop_if_break_3/input.js
-loops/drop_if_break_4/input.js
 loops/drop_if_else_break_1/input.js
-loops/drop_if_else_break_2/input.js
-loops/drop_if_else_break_3/input.js
-loops/drop_if_else_break_4/input.js
 loops/issue_2740_3/input.js
 loops/issue_2740_4/input.js
 loops/issue_2740_5/input.js

crates/swc_ecma_minifier/tests/compress/fixture/issues/2257/full/output.js

@@ -7547,10 +7547,7 @@
                         string
                     ];
                     if (!isRegExp(separator)) return nativeSplit.call(string, separator, lim);
-                    for(var output = [], flags = (separator.ignoreCase ? 'i' : '') + (separator.multiline ? 'm' : '') + (separator.unicode ? 'u' : '') + (separator.sticky ? 'y' : ''), lastLastIndex = 0, separatorCopy = new RegExp(separator.source, flags + 'g'); match = regexpExec.call(separatorCopy, string);){
-                        if ((lastIndex = separatorCopy.lastIndex) > lastLastIndex && (output.push(string.slice(lastLastIndex, match.index)), match.length > 1 && match.index < string.length && arrayPush.apply(output, match.slice(1)), lastLength = match[0].length, lastLastIndex = lastIndex, output.length >= lim)) break;
-                        separatorCopy.lastIndex === match.index && separatorCopy.lastIndex++;
-                    }
+                    for(var output = [], flags = (separator.ignoreCase ? 'i' : '') + (separator.multiline ? 'm' : '') + (separator.unicode ? 'u' : '') + (separator.sticky ? 'y' : ''), lastLastIndex = 0, separatorCopy = new RegExp(separator.source, flags + 'g'); (match = regexpExec.call(separatorCopy, string)) && (!((lastIndex = separatorCopy.lastIndex) > lastLastIndex) || (output.push(string.slice(lastLastIndex, match.index)), match.length > 1 && match.index < string.length && arrayPush.apply(output, match.slice(1)), lastLength = match[0].length, lastLastIndex = lastIndex, !(output.length >= lim)));)separatorCopy.lastIndex === match.index && separatorCopy.lastIndex++;
                     return lastLastIndex === string.length ? (lastLength || !separatorCopy.test('')) && output.push('') : output.push(string.slice(lastLastIndex)), output.length > lim ? output.slice(0, lim) : output;
                 } : '0'.split(void 0, 0).length ? function(separator, limit) {
                     return void 0 === separator && 0 === limit ? [] : nativeSplit.call(this, separator, limit);
@@ -15076,10 +15073,7 @@
                             }
                             var u, n = 0, A = -1, p = -1, C = 0, x = 0, w = g, z = null;
                             b: for(;;){
-                                for(;;){
-                                    if (w !== h || 0 !== f && 3 !== w.nodeType || (A = n + f), w !== k || 0 !== l && 3 !== w.nodeType || (p = n + l), 3 === w.nodeType && (n += w.nodeValue.length), null === (u = w.firstChild)) break;
-                                    z = w, w = u;
-                                }
+                                for(; w !== h || 0 !== f && 3 !== w.nodeType || (A = n + f), w !== k || 0 !== l && 3 !== w.nodeType || (p = n + l), 3 === w.nodeType && (n += w.nodeValue.length), null !== (u = w.firstChild);)z = w, w = u;
                                 for(;;){
                                     if (w === g) break b;
                                     if (z === h && ++C === f && (A = n), z === k && ++x === l && (p = n), null !== (u = w.nextSibling)) break;

crates/swc_ecma_minifier/tests/compress/fixture/issues/emotion/react/1/output.js

@@ -397,10 +397,7 @@
                 return node1(value, root, parent, DECLARATION, Utility_substr(value, 0, length), Utility_substr(value, length + 1, -1), length);
             }
             var identifierWithPointTracking = function(begin, points, index) {
-                for(var previous = 0, character = 0;;){
-                    if (previous = character, character = peek(), 38 === previous && 12 === character && (points[index] = 1), token(character)) break;
-                    next1();
-                }
+                for(var previous = 0, character = 0; previous = character, character = peek(), 38 === previous && 12 === character && (points[index] = 1), !token(character);)next1();
                 return slice(begin, position);
             }, toRules = function(parsed, points) {
                 var index = -1, character = 44;

crates/swc_ecma_minifier/tests/compress/fixture/next/31077/static/chunks/1606726a.10299989c08cb523/output.js

@@ -99,24 +99,21 @@
                 };
             }
             function scrollRectIntoView(view, rect, startDOM) {
-                for(var scrollThreshold = view.someProp("scrollThreshold") || 0, scrollMargin = view.someProp("scrollMargin") || 5, doc = view.dom.ownerDocument, parent = startDOM || view.dom;; parent = parentNode(parent)){
-                    if (!parent) break;
-                    if (1 == parent.nodeType) {
-                        var atTop = parent == doc.body || 1 != parent.nodeType, bounding = atTop ? windowRect(doc) : clientRect(parent), moveX = 0, moveY = 0;
-                        if (rect.top < bounding.top + getSide(scrollThreshold, "top") ? moveY = -(bounding.top - rect.top + getSide(scrollMargin, "top")) : rect.bottom > bounding.bottom - getSide(scrollThreshold, "bottom") && (moveY = rect.bottom - bounding.bottom + getSide(scrollMargin, "bottom")), rect.left < bounding.left + getSide(scrollThreshold, "left") ? moveX = -(bounding.left - rect.left + getSide(scrollMargin, "left")) : rect.right > bounding.right - getSide(scrollThreshold, "right") && (moveX = rect.right - bounding.right + getSide(scrollMargin, "right")), moveX || moveY) if (atTop) doc.defaultView.scrollBy(moveX, moveY);
-                        else {
-                            var startX = parent.scrollLeft, startY = parent.scrollTop;
-                            moveY && (parent.scrollTop += moveY), moveX && (parent.scrollLeft += moveX);
-                            var dX = parent.scrollLeft - startX, dY = parent.scrollTop - startY;
-                            rect = {
-                                left: rect.left - dX,
-                                top: rect.top - dY,
-                                right: rect.right - dX,
-                                bottom: rect.bottom - dY
-                            };
-                        }
-                        if (atTop) break;
+                for(var scrollThreshold = view.someProp("scrollThreshold") || 0, scrollMargin = view.someProp("scrollMargin") || 5, doc = view.dom.ownerDocument, parent = startDOM || view.dom; parent; parent = parentNode(parent))if (1 == parent.nodeType) {
+                    var atTop = parent == doc.body || 1 != parent.nodeType, bounding = atTop ? windowRect(doc) : clientRect(parent), moveX = 0, moveY = 0;
+                    if (rect.top < bounding.top + getSide(scrollThreshold, "top") ? moveY = -(bounding.top - rect.top + getSide(scrollMargin, "top")) : rect.bottom > bounding.bottom - getSide(scrollThreshold, "bottom") && (moveY = rect.bottom - bounding.bottom + getSide(scrollMargin, "bottom")), rect.left < bounding.left + getSide(scrollThreshold, "left") ? moveX = -(bounding.left - rect.left + getSide(scrollMargin, "left")) : rect.right > bounding.right - getSide(scrollThreshold, "right") && (moveX = rect.right - bounding.right + getSide(scrollMargin, "right")), moveX || moveY) if (atTop) doc.defaultView.scrollBy(moveX, moveY);
+                    else {
+                        var startX = parent.scrollLeft, startY = parent.scrollTop;
+                        moveY && (parent.scrollTop += moveY), moveX && (parent.scrollLeft += moveX);
+                        var dX = parent.scrollLeft - startX, dY = parent.scrollTop - startY;
+                        rect = {
+                            left: rect.left - dX,
+                            top: rect.top - dY,
+                            right: rect.right - dX,
+                            bottom: rect.bottom - dY
+                        };
                     }
+                    if (atTop) break;
                 }
             }
             function scrollStack(dom) {
@@ -705,8 +702,7 @@
                 }, NodeViewDesc.prototype.protectLocalComposition = function(view, ref) {
                     var node = ref.node, pos = ref.pos, text = ref.text;
                     if (!this.getDesc(node)) {
-                        for(var topNode = node;; topNode = topNode.parentNode){
-                            if (topNode.parentNode == this.contentDOM) break;
+                        for(var topNode = node; topNode.parentNode != this.contentDOM; topNode = topNode.parentNode){
                             for(; topNode.previousSibling;)topNode.parentNode.removeChild(topNode.previousSibling);
                             for(; topNode.nextSibling;)topNode.parentNode.removeChild(topNode.nextSibling);
                             topNode.pmViewDesc && (topNode.pmViewDesc = null);
@@ -2648,8 +2644,7 @@
                             "IMG" == next.nodeName && (box$1 = next.getBoundingClientRect()).right <= coords3.left && box$1.bottom > coords3.top && offset1++;
                         }
                         node1 == view10.dom && offset1 == node1.childNodes.length - 1 && 1 == node1.lastChild.nodeType && coords3.top > node1.lastChild.getBoundingClientRect().bottom ? pos = view10.state.doc.content.size : (0 == offset1 || 1 != node1.nodeType || "BR" != node1.childNodes[offset1 - 1].nodeName) && (pos = function(view, node, offset, coords) {
-                            for(var outside = -1, cur = node;;){
-                                if (cur == view.dom) break;
+                            for(var outside = -1, cur = node; cur != view.dom;){
                                 var desc = view.docView.nearestDesc(cur, !0);
                                 if (!desc) return null;
                                 if (desc.node.isBlock && desc.parent) {

crates/swc_ecma_minifier/tests/compress/fixture/next/33265/static/chunks/d6e1aeb5-38a8d7ae57119c23/output.js

@@ -484,13 +484,10 @@
                     if (!data.disabled) {
                         event = fixEvent(event);
                         var handlers = data.handlers[event.type];
-                        if (handlers) for(var handlersCopy = handlers.slice(0), m = 0, n = handlersCopy.length; m < n; m++){
-                            if (event.isImmediatePropagationStopped()) break;
-                            try {
-                                handlersCopy[m].call(elem, event, hash);
-                            } catch (e) {
-                                log$1.error(e);
-                            }
+                        if (handlers) for(var handlersCopy = handlers.slice(0), m = 0, n = handlersCopy.length; m < n && !event.isImmediatePropagationStopped(); m++)try {
+                            handlersCopy[m].call(elem, event, hash);
+                        } catch (e) {
+                            log$1.error(e);
                         }
                     }
                 }), 1 === data.handlers[type].length) if (elem.addEventListener) {
@@ -8813,8 +8810,7 @@
                         for(var i = 0, result = {
                             payloadType: -1,
                             payloadSize: 0
-                        }, payloadType = 0, payloadSize = 0; i < bytes.byteLength;){
-                            if (128 === bytes[i]) break;
+                        }, payloadType = 0, payloadSize = 0; i < bytes.byteLength && 128 !== bytes[i];){
                             for(; 255 === bytes[i];)payloadType += 255, i++;
                             for(payloadType += bytes[i++]; 255 === bytes[i];)payloadSize += 255, i++;
                             if (payloadSize += bytes[i++], !result.payload && 4 === payloadType) {
@@ -10093,10 +10089,7 @@
                             nalUnit.data
                         ]), nalUnits.push(nalUnit);
                     }, this.flush = function() {
-                        for(var alignedGops, frames, gopForFusion, gops, moof, mdat, boxes, firstGop, lastGop, prependedContentDuration = 0; nalUnits.length;){
-                            if ('access_unit_delimiter_rbsp' === nalUnits[0].nalUnitType) break;
-                            nalUnits.shift();
-                        }
+                        for(var alignedGops, frames, gopForFusion, gops, moof, mdat, boxes, firstGop, lastGop, prependedContentDuration = 0; nalUnits.length && 'access_unit_delimiter_rbsp' !== nalUnits[0].nalUnitType;)nalUnits.shift();
                         if (0 === nalUnits.length) {
                             this.resetStream_(), this.trigger('done', 'VideoSegmentStream');
                             return;
@@ -10141,8 +10134,7 @@
                         return nearestGopObj ? nearestGopObj.gop : null;
                     }, this.alignGopsAtStart_ = function(gops) {
                         var alignIndex, gopIndex, align, gop, byteLength, nalCount, duration, alignedGops;
-                        for(byteLength = gops.byteLength, nalCount = gops.nalCount, duration = gops.duration, alignIndex = gopIndex = 0; alignIndex < gopsToAlignWith.length && gopIndex < gops.length;){
-                            if (align = gopsToAlignWith[alignIndex], gop = gops[gopIndex], align.pts === gop.pts) break;
+                        for(byteLength = gops.byteLength, nalCount = gops.nalCount, duration = gops.duration, alignIndex = gopIndex = 0; alignIndex < gopsToAlignWith.length && gopIndex < gops.length && (align = gopsToAlignWith[alignIndex], gop = gops[gopIndex], align.pts !== gop.pts);){
                             if (gop.pts > align.pts) {
                                 alignIndex++;
                                 continue;

crates/swc_ecma_minifier/tests/compress/fixture/next/33265/static/chunks/pages/index-cb36c1bf7f830e3c/output.js

@@ -438,10 +438,7 @@
                 2,
                 1
             ], getLength = function(byte) {
-                for(var len = 1, i = 0; i < LENGTH_TABLE.length; i++){
-                    if (byte & LENGTH_TABLE[i]) break;
-                    len++;
-                }
+                for(var len = 1, i = 0; i < LENGTH_TABLE.length && !(byte & LENGTH_TABLE[i]); i++)len++;
                 return len;
             }, getvint = function(bytes, offset, removeLength, signed) {
                 void 0 === removeLength && (removeLength = !0), void 0 === signed && (signed = !1);
@@ -5787,10 +5784,7 @@
                 return byteArray;
             }
             function utf16leToBytes(str, units) {
-                for(var c, hi, lo, byteArray = [], i = 0; i < str.length; ++i){
-                    if ((units -= 2) < 0) break;
-                    hi = (c = str.charCodeAt(i)) >> 8, lo = c % 256, byteArray.push(lo), byteArray.push(hi);
-                }
+                for(var c, hi, lo, byteArray = [], i = 0; i < str.length && !((units -= 2) < 0); ++i)hi = (c = str.charCodeAt(i)) >> 8, lo = c % 256, byteArray.push(lo), byteArray.push(hi);
                 return byteArray;
             }
             function base64ToBytes(str1) {
@@ -5801,10 +5795,7 @@
                 }(str1));
             }
             function blitBuffer(src, dst, offset, length) {
-                for(var i = 0; i < length; ++i){
-                    if (i + offset >= dst.length || i >= src.length) break;
-                    dst[i + offset] = src[i];
-                }
+                for(var i = 0; i < length && !(i + offset >= dst.length) && !(i >= src.length); ++i)dst[i + offset] = src[i];
                 return i;
             }
             function isInstance(obj, type) {

crates/swc_ecma_minifier/tests/compress/fixture/next/feedback-2/codemirror/output.js

@@ -404,10 +404,7 @@
         return nstate;
     }
     function innerMode(mode, state) {
-        for(var info; mode.innerMode;){
-            if (!(info = mode.innerMode(state)) || info.mode == mode) break;
-            state = info.state, mode = info.mode;
-        }
+        for(var info; mode.innerMode && (info = mode.innerMode(state)) && info.mode != mode;)state = info.state, mode = info.mode;
         return info || {
             mode: mode,
             state: state
@@ -450,10 +447,7 @@
     }
     function lineNo1(line) {
         if (null == line.parent) return null;
-        for(var cur = line.parent, no = indexOf(cur.lines, line), chunk = cur.parent; chunk; cur = chunk, chunk = chunk.parent)for(var i = 0;; ++i){
-            if (chunk.children[i] == cur) break;
-            no += chunk.children[i].chunkSize();
-        }
+        for(var cur = line.parent, no = indexOf(cur.lines, line), chunk = cur.parent; chunk; cur = chunk, chunk = chunk.parent)for(var i = 0; chunk.children[i] != cur; ++i)no += chunk.children[i].chunkSize();
         return no + cur.first;
     }
     function lineAtHeight(chunk, h) {
@@ -4651,8 +4645,7 @@
         }
         if ("char" == unit || "codepoint" == unit) moveOnce();
         else if ("column" == unit) moveOnce(!0);
-        else if ("word" == unit || "group" == unit) for(var sawType = null, group = "group" == unit, helper = doc.cm && doc.cm.getHelper(pos2, "wordChars"), first = !0;; first = !1){
-            if (dir1 < 0 && !moveOnce(!first)) break;
+        else if ("word" == unit || "group" == unit) for(var sawType = null, group = "group" == unit, helper = doc.cm && doc.cm.getHelper(pos2, "wordChars"), first = !0; !(dir1 < 0) || moveOnce(!first); first = !1){
             var cur = lineObj.text.charAt(pos2.ch) || "\n", type = isWordChar(cur, helper) ? "w" : group && "\n" == cur ? "n" : !group || /\s/.test(cur) ? null : "p";
             if (!group || first || type || (type = "s"), sawType && sawType != type) {
                 dir1 < 0 && (dir1 = 1, moveOnce(), pos2.sticky = "after");
@@ -4669,8 +4662,7 @@
             var pageSize = Math.min(cm.display.wrapper.clientHeight, window.innerHeight || document.documentElement.clientHeight), moveAmount = Math.max(pageSize - 0.5 * textHeight(cm.display), 3);
             y = (dir > 0 ? pos.bottom : pos.top) + dir * moveAmount;
         } else "line" == unit && (y = dir > 0 ? pos.bottom + 3 : pos.top - 3);
-        for(;;){
-            if (!(target = coordsChar(cm, x, y)).outside) break;
+        for(; (target = coordsChar(cm, x, y)).outside;){
             if (dir < 0 ? y <= 0 : y >= doc.height) {
                 target.hitSide = !0;
                 break;
@@ -4726,10 +4718,7 @@
                 }
             } else 3 == node.nodeType && addText(node.nodeValue.replace(/\u200b/g, "").replace(/\u00a0/g, " "));
         }
-        for(;;){
-            if (walk(from), from == to) break;
-            from = from.nextSibling, extraLinebreak = !1;
-        }
+        for(; walk(from), from != to;)from = from.nextSibling, extraLinebreak = !1;
         return text;
     }
     function domToPos(cm, node, offset) {

crates/swc_ecma_minifier/tests/compress/fixture/next/feedback-util-promisify/chunks/pages/_app-72ad41192608e93a/output.js

@@ -729,10 +729,7 @@
                             return r;
                         }
                         function utf16leToBytes(e, r) {
-                            for(var t, f, n, i = [], o = 0; o < e.length; ++o){
-                                if ((r -= 2) < 0) break;
-                                f = (t = e.charCodeAt(o)) >> 8, n = t % 256, i.push(n), i.push(f);
-                            }
+                            for(var t, f, n, i = [], o = 0; o < e.length && !((r -= 2) < 0); ++o)f = (t = e.charCodeAt(o)) >> 8, n = t % 256, i.push(n), i.push(f);
                             return i;
                         }
                         function base64ToBytes(e6) {
@@ -743,10 +740,7 @@
                             }(e6));
                         }
                         function blitBuffer(e, r, t, f) {
-                            for(var n = 0; n < f; ++n){
-                                if (n + t >= r.length || n >= e.length) break;
-                                r[n + t] = e[n];
-                            }
+                            for(var n = 0; n < f && !(n + t >= r.length) && !(n >= e.length); ++n)r[n + t] = e[n];
                             return n;
                         }
                         function isInstance(e, r) {

crates/swc_ecma_minifier/tests/golden.txt

@@ -826,6 +826,11 @@ loops/dead_code_condition/input.js
 loops/do_switch/input.js
 loops/drop_if_break_1/input.js
 loops/drop_if_break_2/input.js
+loops/drop_if_break_3/input.js
+loops/drop_if_break_4/input.js
+loops/drop_if_else_break_2/input.js
+loops/drop_if_else_break_3/input.js
+loops/drop_if_else_break_4/input.js
 loops/evaluate/input.js
 loops/in_parenthesis_1/input.js
 loops/in_parenthesis_2/input.js

crates/swc_ecma_minifier/tests/projects/output/angular-1.2.5.js

@@ -2178,11 +2178,7 @@
             });
         },
         readIdent: function() {
-            for(var lastDot, peekIndex, methodName, ch, parser = this, ident = '', start = this.index; this.index < this.text.length;){
-                if ('.' === (ch = this.text.charAt(this.index)) || this.isIdent(ch) || this.isNumber(ch)) '.' === ch && (lastDot = this.index), ident += ch;
-                else break;
-                this.index++;
-            }
+            for(var lastDot, peekIndex, methodName, ch, parser = this, ident = '', start = this.index; this.index < this.text.length && ('.' === (ch = this.text.charAt(this.index)) || this.isIdent(ch) || this.isNumber(ch));)'.' === ch && (lastDot = this.index), ident += ch, this.index++;
             if (lastDot) for(peekIndex = this.index; peekIndex < this.text.length;){
                 if ('(' === (ch = this.text.charAt(peekIndex))) {
                     methodName = ident.substr(lastDot - start + 1), ident = ident.substr(0, lastDot - start), this.index = peekIndex;

crates/swc_ecma_minifier/tests/projects/output/jquery-1.9.1.js

@@ -1649,12 +1649,9 @@
                     if (!(context = Expr.find.ID(token.matches[0].replace(runescape, funescape), context)[0])) return results;
                     selector = selector.slice(tokens.shift().value.length);
                 }
-                for(i = matchExpr.needsContext.test(selector) ? 0 : tokens.length; i--;){
-                    if (token = tokens[i], Expr.relative[type = token.type]) break;
-                    if ((find = Expr.find[type]) && (seed = find(token.matches[0].replace(runescape, funescape), rsibling.test(tokens[0].type) && context.parentNode || context))) {
-                        if (tokens.splice(i, 1), !(selector = seed.length && toSelector(tokens))) return push.apply(results, slice.call(seed, 0)), results;
-                        break;
-                    }
+                for(i = matchExpr.needsContext.test(selector) ? 0 : tokens.length; (i--) && (token = tokens[i], !Expr.relative[type = token.type]);)if ((find = Expr.find[type]) && (seed = find(token.matches[0].replace(runescape, funescape), rsibling.test(tokens[0].type) && context.parentNode || context))) {
+                    if (tokens.splice(i, 1), !(selector = seed.length && toSelector(tokens))) return push.apply(results, slice.call(seed, 0)), results;
+                    break;
                 }
             }
             return compile(selector, match)(seed, context, documentIsXML, results, rsibling.test(selector)), results;

crates/swc_ecma_minifier/tests/projects/output/jquery.mobile-1.4.2.js

@@ -230,10 +230,7 @@
             $1.mobile.activeClickedLink && (!$1.mobile.activeClickedLink.closest("." + $1.mobile.activePageClass).length || forceRemoval) && $1.mobile.activeClickedLink.removeClass($1.mobile.activeBtnClass), $1.mobile.activeClickedLink = null;
         },
         getInheritedTheme: function(el, defaultTheme) {
-            for(var c, m, e = el[0], ltr = "", re = /ui-(bar|body|overlay)-([a-z])\b/; e;){
-                if ((c = e.className || "") && (m = re.exec(c)) && (ltr = m[2])) break;
-                e = e.parentNode;
-            }
+            for(var c, m, e = el[0], ltr = "", re = /ui-(bar|body|overlay)-([a-z])\b/; e && (!((c = e.className || "") && (m = re.exec(c))) || !(ltr = m[2]));)e = e.parentNode;
             return ltr || defaultTheme || "a";
         },
         enhanceable: function(elements) {
@@ -1621,10 +1618,7 @@
     }), $15.mobile.navreadyDeferred = $15.Deferred(), pageTransitionQueue = [], isPageTransitioning = !1, function($, undefined) {
         var domreadyDeferred = $.Deferred(), loadDeferred = $.Deferred(), documentUrl = $.mobile.path.documentUrl, $lastVClicked = null;
         function findClosestLink(ele) {
-            for(; ele;){
-                if ("string" == typeof ele.nodeName && "a" === ele.nodeName.toLowerCase()) break;
-                ele = ele.parentNode;
-            }
+            for(; ele && ("string" != typeof ele.nodeName || "a" !== ele.nodeName.toLowerCase());)ele = ele.parentNode;
             return ele;
         }
         $.mobile.loadPage = function(url, opts) {

crates/swc_ecma_minifier/tests/projects/output/react-17.0.2.js

@@ -755,8 +755,7 @@
     }
     function workLoop(hasTimeRemaining, initialTime) {
         var currentTime = initialTime;
-        for(advanceTimers(currentTime), currentTask = peek(taskQueue); null !== currentTask;){
-            if (currentTask.expirationTime > currentTime && (!hasTimeRemaining || shouldYieldToHost())) break;
+        for(advanceTimers(currentTime), currentTask = peek(taskQueue); null !== currentTask && !(currentTask.expirationTime > currentTime && (!hasTimeRemaining || shouldYieldToHost()));){
             var callback = currentTask.callback;
             if ('function' == typeof callback) {
                 currentTask.callback = null, currentPriorityLevel = currentTask.priorityLevel;

crates/swc_ecma_minifier/tests/projects/output/react-dom-17.0.2.js

@@ -3602,8 +3602,7 @@
         return inst || null;
     }
     function accumulateEnterLeaveListenersForEvent(dispatchQueue, event, target, common, inCapturePhase) {
-        for(var registrationName = event._reactName, listeners = [], instance = target; null !== instance;){
-            if (instance === common) break;
+        for(var registrationName = event._reactName, listeners = [], instance = target; null !== instance && instance !== common;){
             var _instance4 = instance, alternate = _instance4.alternate, stateNode = _instance4.stateNode, tag = _instance4.tag;
             if (null !== alternate && alternate === common) break;
             if (5 === tag && null !== stateNode) {
@@ -8443,10 +8442,7 @@
                     return function(outerNode, anchorNode, anchorOffset, focusNode, focusOffset) {
                         var length = 0, start = -1, end = -1, indexWithinAnchor = 0, indexWithinFocus = 0, node = outerNode, parentNode = null;
                         outer: for(;;){
-                            for(var next = null;;){
-                                if (node === anchorNode && (0 === anchorOffset || 3 === node.nodeType) && (start = length + anchorOffset), node === focusNode && (0 === focusOffset || 3 === node.nodeType) && (end = length + focusOffset), 3 === node.nodeType && (length += node.nodeValue.length), null === (next = node.firstChild)) break;
-                                parentNode = node, node = next;
-                            }
+                            for(var next = null; node === anchorNode && (0 === anchorOffset || 3 === node.nodeType) && (start = length + anchorOffset), node === focusNode && (0 === focusOffset || 3 === node.nodeType) && (end = length + focusOffset), 3 === node.nodeType && (length += node.nodeValue.length), null !== (next = node.firstChild);)parentNode = node, node = next;
                             for(;;){
                                 if (node === outerNode) break outer;
                                 if (parentNode === anchorNode && ++indexWithinAnchor === anchorOffset && (start = length), parentNode === focusNode && ++indexWithinFocus === focusOffset && (end = length), null !== (next = node.nextSibling)) break;