fix: trim() stringifyNode to prevent subtle uniqueness bugs

Author: Bart Veneman

src/__fixtures__/bol-com-20190617.json

@@ -56883,11 +56883,11 @@
   },
   "declarations": {
     "total": 8228,
-    "totalUnique": 1987,
-    "uniquenessRatio": 0.24149246475449684,
+    "totalUnique": 1986,
+    "uniquenessRatio": 0.24137092853670394,
     "unique": {
-      "total": 1987,
-      "ratio": 0.24149246475449684
+      "total": 1986,
+      "ratio": 0.24137092853670394
     },
     "importants": {
       "total": 534,

src/__fixtures__/bootstrap-5.0.0.json

@@ -24037,11 +24037,11 @@
   },
   "declarations": {
     "total": 4091,
-    "totalUnique": 1209,
-    "uniquenessRatio": 0.29552676607186507,
+    "totalUnique": 1205,
+    "uniquenessRatio": 0.2945490100219995,
     "unique": {
-      "total": 1209,
-      "ratio": 0.29552676607186507
+      "total": 1205,
+      "ratio": 0.2945490100219995
     },
     "importants": {
       "total": 1279,
@@ -25143,28 +25143,27 @@
     },
     "fontFamilies": {
       "total": 5,
-      "totalUnique": 3,
+      "totalUnique": 2,
       "unique": {
         "var(--bs-font-sans-serif)": 3,
-        "var(--bs-font-monospace)": 1,
-        "var(--bs-font-monospace) ": 1
+        "var(--bs-font-monospace)": 2
       },
-      "uniquenessRatio": 0.6
+      "uniquenessRatio": 0.4
     },
     "fontSizes": {
       "total": 79,
-      "totalUnique": 35,
+      "totalUnique": 25,
       "unique": {
-        "1rem": 9,
-        "calc(1.375rem + 1.5vw)": 2,
-        "2.5rem": 2,
-        "calc(1.325rem + 0.9vw)": 1,
-        "2rem": 1,
-        "calc(1.3rem + 0.6vw)": 1,
-        "1.75rem": 1,
-        "calc(1.275rem + 0.3vw)": 2,
-        "1.5rem": 2,
-        "1.25rem": 11,
+        "1rem": 10,
+        "calc(1.375rem + 1.5vw)": 3,
+        "2.5rem": 3,
+        "calc(1.325rem + 0.9vw)": 2,
+        "2rem": 2,
+        "calc(1.3rem + 0.6vw)": 2,
+        "1.75rem": 2,
+        "calc(1.275rem + 0.3vw)": 3,
+        "1.5rem": 3,
+        "1.25rem": 12,
         "0.875em": 10,
         "0.75em": 2,
         "1em": 2,
@@ -25179,19 +25178,9 @@
         "calc(1.425rem + 2.1vw)": 1,
         "3rem": 1,
         "0.875rem": 12,
-        "0.75rem": 1,
-        "calc(1.375rem + 1.5vw) ": 1,
-        "calc(1.325rem + 0.9vw) ": 1,
-        "calc(1.3rem + 0.6vw) ": 1,
-        "calc(1.275rem + 0.3vw) ": 1,
-        "1.25rem ": 1,
-        "1rem ": 1,
-        "2.5rem ": 1,
-        "2rem ": 1,
-        "1.75rem ": 1,
-        "1.5rem ": 1
+        "0.75rem": 1
       },
-      "uniquenessRatio": 0.4430379746835443
+      "uniquenessRatio": 0.31645569620253167
     },
     "zindexes": {
       "total": 37,
@@ -25223,7 +25212,7 @@
     },
     "boxShadows": {
       "total": 54,
-      "totalUnique": 27,
+      "totalUnique": 26,
       "unique": {
         "inset 0 0 0 9999px var(--bs-table-accent-bg)": 1,
         "0 0 0 0.25rem rgba(13, 110, 253, 0.25)": 7,
@@ -25248,12 +25237,11 @@
         "0 0 0 0.25rem rgba(33, 37, 41, 0.5)": 2,
         "0 0 0 0.25rem": 1,
         "inset 0 -1px 0 rgba(0, 0, 0, 0.125)": 1,
-        "0 0.5rem 1rem rgba(0, 0, 0, 0.15)": 1,
-        "0 0.5rem 1rem rgba(0, 0, 0, 0.15) ": 1,
-        "0 0.125rem 0.25rem rgba(0, 0, 0, 0.075) ": 1,
-        "0 1rem 3rem rgba(0, 0, 0, 0.175) ": 1
+        "0 0.5rem 1rem rgba(0, 0, 0, 0.15)": 2,
+        "0 0.125rem 0.25rem rgba(0, 0, 0, 0.075)": 1,
+        "0 1rem 3rem rgba(0, 0, 0, 0.175)": 1
       },
-      "uniquenessRatio": 0.5
+      "uniquenessRatio": 0.48148148148148145
     },
     "animations": {
       "durations": {
@@ -25287,16 +25275,15 @@
     },
     "prefixes": {
       "total": 11,
-      "totalUnique": 6,
+      "totalUnique": 5,
       "unique": {
-        " system-ui, -apple-system, \"Segoe UI\", Roboto, \"Helvetica Neue\", Arial, \"Noto Sans\", \"Liberation Sans\", sans-serif, \"Apple Color Emoji\", \"Segoe UI Emoji\", \"Segoe UI Symbol\", \"Noto Color Emoji\"": 1,
+        "system-ui, -apple-system, \"Segoe UI\", Roboto, \"Helvetica Neue\", Arial, \"Noto Sans\", \"Liberation Sans\", sans-serif, \"Apple Color Emoji\", \"Segoe UI Emoji\", \"Segoe UI Symbol\", \"Noto Color Emoji\"": 1,
         "-webkit-match-parent": 1,
         "-webkit-max-content": 1,
         "-moz-max-content": 1,
-        "-webkit-sticky": 6,
-        "-webkit-sticky ": 1
+        "-webkit-sticky": 7
       },
-      "uniquenessRatio": 0.5454545454545454
+      "uniquenessRatio": 0.45454545454545453
     },
     "browserhacks": {
       "total": 0,

src/__fixtures__/cnn-20220403.json

@@ -153091,11 +153091,11 @@
   },
   "declarations": {
     "total": 27794,
-    "totalUnique": 5827,
-    "uniquenessRatio": 0.20964956465424192,
+    "totalUnique": 5823,
+    "uniquenessRatio": 0.20950564870115854,
     "unique": {
-      "total": 5827,
-      "ratio": 0.20964956465424192
+      "total": 5823,
+      "ratio": 0.20950564870115854
     },
     "importants": {
       "total": 345,
@@ -154631,7 +154631,7 @@
     },
     "fontFamilies": {
       "total": 802,
-      "totalUnique": 37,
+      "totalUnique": 35,
       "unique": {
         "sans-serif": 2,
         "monospace,serif": 1,
@@ -154643,7 +154643,7 @@
         "STYLE": 2,
         "CNN Business": 4,
         "CNN Travel": 6,
-        "cnn-icons": 212,
+        "cnn-icons": 214,
         "CNN,Helvetica Neue,Helvetica,Arial,Utkal,sans-serif": 197,
         "CNN,Helvetica Neue,Verdana,Geneva,sans-serif": 14,
         "Georgia,serif": 1,
@@ -154662,27 +154662,25 @@
         "\"DIN Condensed\"": 1,
         "\"CNN Business\"": 4,
         "\"CNN Travel\"": 6,
-        "CNN, \"Helvetica Neue\", Helvetica, Arial, Utkal, sans-serif": 228,
+        "CNN, \"Helvetica Neue\", Helvetica, Arial, Utkal, sans-serif": 229,
         "CNN, \"Helvetica Neue\", Verdana, Geneva, sans-serif": 12,
         "Georgia, serif": 1,
         "STYLE, \"Helvetica Neue\", Helvetica, Arial, Utkal, sans-serif": 1,
         "CNN, \"Helvetica Neue\", \"Arial Black\", Helvetica, Arial, Utkal, sans-serif": 4,
-        "CNN, \"Helvetica Neue\", Helvetica, Arial, Utkal, sans-serif ": 1,
-        "cnn-icons ": 2,
         "CNN, \"Helvetica Neue\", Verdana, Helvetica, Arial, Utkal, sans-serif": 1
       },
-      "uniquenessRatio": 0.046134663341645885
+      "uniquenessRatio": 0.043640897755610975
     },
     "fontSizes": {
       "total": 2308,
-      "totalUnique": 419,
+      "totalUnique": 412,
       "unique": {
         "0": 7,
         "100%": 5,
         "2em": 5,
         "1.5em": 6,
         "1.17em": 2,
-        "1em": 24,
+        "1em": 25,
         ".83em": 1,
         ".75em": 1,
         "75%": 3,
@@ -154701,7 +154699,7 @@
         "1.2rem": 80,
         "12px": 47,
         ".8rem": 26,
-        "14px": 117,
+        "14px": 118,
         ".93333rem": 67,
         "27px": 2,
         "1.8rem": 4,
@@ -154713,7 +154711,7 @@
         "3.6rem": 2,
         "25px": 5,
         "1.66667rem": 10,
-        "36px": 134,
+        "36px": 165,
         "2.4rem": 14,
         "52px": 8,
         "3.46667rem": 16,
@@ -154742,7 +154740,7 @@
         "3em": 4,
         "1.46667rem": 22,
         "21px": 1,
-        "1.4rem": 1,
+        "1.4rem": 2,
         "3.21429vw": 14,
         "2.41071vw": 4,
         "1.60714vw": 4,
@@ -154910,9 +154908,9 @@
         "2.09732vw": 2,
         "1.39821vw": 2,
         "1.9575vw": 2,
-        "150px": 5,
-        "15.625vw": 1,
-        "136px": 9,
+        "150px": 6,
+        "15.625vw": 2,
+        "136px": 10,
         "14.16667vw": 1,
         "46px": 1,
         "3.06667rem": 2,
@@ -155006,9 +155004,6 @@
         "0.53333rem": 1,
         "0px": 7,
         "0.86667rem": 6,
-        "14px ": 1,
-        "1.4rem ": 1,
-        "36px ": 31,
         "13.9286vw": 2,
         "10.4464vw": 1,
         "12.1179vw": 2,
@@ -155041,10 +155036,7 @@
         "43.7486px": 2,
         "43.1429px": 4,
         "37.5343px": 2,
-        "150px ": 1,
-        "15.625vw ": 1,
-        "136px ": 1,
-        "14.1667vw ": 1,
+        "14.1667vw": 1,
         "0.66667rem": 1,
         "12.1429vw": 2,
         "11.5357vw": 2,
@@ -155092,23 +155084,22 @@
         "0.688em": 1,
         "0.85em": 2,
         "0.7em": 2,
-        "1em ": 1,
         "0.6em": 2,
-        "1.32rem ": 1,
+        "1.32rem": 1,
         "64px": 1
       },
-      "uniquenessRatio": 0.1815424610051993
+      "uniquenessRatio": 0.17850953206239167
     },
     "zindexes": {
       "total": 401,
-      "totalUnique": 36,
+      "totalUnique": 34,
       "unique": {
         "0": 130,
         "1": 36,
         "2": 23,
         "3": 12,
-        "4": 1,
-        "5": 18,
+        "4": 2,
+        "5": 19,
         "9": 1,
         "26": 24,
         "27": 2,
@@ -155136,11 +155127,9 @@
         "-1": 5,
         "-22": 12,
         "-21": 8,
-        "4 ": 1,
-        "-9999": 1,
-        "5 ": 1
+        "-9999": 1
       },
-      "uniquenessRatio": 0.08977556109725686
+      "uniquenessRatio": 0.08478802992518704
     },
     "textShadows": {
       "total": 19,

src/__fixtures__/css-tricks-20190319.json

@@ -20544,11 +20544,11 @@
   },
   "declarations": {
     "total": 4646,
-    "totalUnique": 1797,
-    "uniquenessRatio": 0.38678433060697376,
+    "totalUnique": 1796,
+    "uniquenessRatio": 0.3865690916917779,
     "unique": {
-      "total": 1797,
-      "ratio": 0.38678433060697376
+      "total": 1796,
+      "ratio": 0.3865690916917779
     },
     "importants": {
       "total": 71,

src/__fixtures__/facebook-20190319.json

@@ -41223,7 +41223,7 @@
     },
     "fontFamilies": {
       "total": 37,
-      "totalUnique": 17,
+      "totalUnique": 15,
       "unique": {
         "Helvetica, Arial, sans-serif": 18,
         "Helvetica Neue, Helvetica, Arial, sans-serif": 1,
@@ -41235,25 +41235,23 @@
         "Georgia, serif": 1,
         "'Open Dyslexic'": 1,
         "Helvetica,Arial,sans-serif": 1,
-        "'Freight Sans Bold', Helvetica, Arial, sans-serif": 1,
-        "'Freight Sans', Helvetica, Arial, sans-serif": 1,
+        "'Freight Sans Bold', Helvetica, Arial, sans-serif": 2,
+        "'Freight Sans', Helvetica, Arial, sans-serif": 2,
         "'Freight Sans'": 1,
         "'Freight Sans Bold'": 1,
-        "'Freight Sans', Helvetica, Arial, sans-serif ": 1,
-        "'Freight Sans Bold', Helvetica, Arial, sans-serif ": 1,
         "Georgia, Lucida Grande, Tahoma, Verdana, Arial, sans-serif": 3
       },
-      "uniquenessRatio": 0.4594594594594595
+      "uniquenessRatio": 0.40540540540540543
     },
     "fontSizes": {
       "total": 171,
-      "totalUnique": 40,
+      "totalUnique": 38,
       "unique": {
-        "0": 4,
+        "0": 5,
         "12px": 34,
         "13px": 18,
         "14px": 23,
-        "11px": 16,
+        "11px": 17,
         "1px": 1,
         "16px": 9,
         "18px": 9,
@@ -41264,8 +41262,6 @@
         "20px": 4,
         "40px": 2,
         "24px": 3,
-        "0 ": 1,
-        "11px ": 1,
         "15px": 5,
         "17px": 3,
         "19px": 4,
@@ -41290,7 +41286,7 @@
         "1.5rem": 1,
         "1.375rem": 1
       },
-      "uniquenessRatio": 0.23391812865497075
+      "uniquenessRatio": 0.2222222222222222
     },
     "zindexes": {
       "total": 52,