task: delete vanilla js prototype\n\n- Removed vanilla/ directory and web/dist/vanilla directory\n- Updated Makefile, Dockerfile, and CI workflow to remove vanilla references\n- Cleaned up web/web.go to remove vanilla embed and routes\n- Verified build and tests pass\n\nCloses NK-2tcnmq

8 files changed, 0 insertions, 1447 deletions

diff --git a/vanilla/node_modules/css-tree/lib/tokenizer/OffsetToLocation.js b/vanilla/node_modules/css-tree/lib/tokenizer/OffsetToLocation.js
deleted file mode 100644
index cc584c0..0000000
--- a/vanilla/node_modules/css-tree/lib/tokenizer/OffsetToLocation.js
+++ /dev/null
@@ -1,87 +0,0 @@
-import { adoptBuffer } from './adopt-buffer.js';
-import { isBOM } from './char-code-definitions.js';
-
-const N = 10;
-const F = 12;
-const R = 13;
-
-function computeLinesAndColumns(host) {
-    const source = host.source;
-    const sourceLength = source.length;
-    const startOffset = source.length > 0 ? isBOM(source.charCodeAt(0)) : 0;
-    const lines = adoptBuffer(host.lines, sourceLength);
-    const columns = adoptBuffer(host.columns, sourceLength);
-    let line = host.startLine;
-    let column = host.startColumn;
-
-    for (let i = startOffset; i < sourceLength; i++) {
-        const code = source.charCodeAt(i);
-
-        lines[i] = line;
-        columns[i] = column++;
-
-        if (code === N || code === R || code === F) {
-            if (code === R && i + 1 < sourceLength && source.charCodeAt(i + 1) === N) {
-                i++;
-                lines[i] = line;
-                columns[i] = column;
-            }
-
-            line++;
-            column = 1;
-        }
-    }
-
-    lines[sourceLength] = line;
-    columns[sourceLength] = column;
-
-    host.lines = lines;
-    host.columns = columns;
-    host.computed = true;
-}
-
-export class OffsetToLocation {
-    constructor(source, startOffset, startLine, startColumn) {
-        this.setSource(source, startOffset, startLine, startColumn);
-        this.lines = null;
-        this.columns = null;
-    }
-    setSource(source = '', startOffset = 0, startLine = 1, startColumn = 1) {
-        this.source = source;
-        this.startOffset = startOffset;
-        this.startLine = startLine;
-        this.startColumn = startColumn;
-        this.computed = false;
-    }
-    getLocation(offset, filename) {
-        if (!this.computed) {
-            computeLinesAndColumns(this);
-        }
-
-        return {
-            source: filename,
-            offset: this.startOffset + offset,
-            line: this.lines[offset],
-            column: this.columns[offset]
-        };
-    }
-    getLocationRange(start, end, filename) {
-        if (!this.computed) {
-            computeLinesAndColumns(this);
-        }
-
-        return {
-            source: filename,
-            start: {
-                offset: this.startOffset + start,
-                line: this.lines[start],
-                column: this.columns[start]
-            },
-            end: {
-                offset: this.startOffset + end,
-                line: this.lines[end],
-                column: this.columns[end]
-            }
-        };
-    }
-};
diff --git a/vanilla/node_modules/css-tree/lib/tokenizer/TokenStream.js b/vanilla/node_modules/css-tree/lib/tokenizer/TokenStream.js
deleted file mode 100644
index 96d48b7..0000000
--- a/vanilla/node_modules/css-tree/lib/tokenizer/TokenStream.js
+++ /dev/null
@@ -1,316 +0,0 @@
-import { adoptBuffer } from './adopt-buffer.js';
-import { cmpStr } from './utils.js';
-import tokenNames from './names.js';
-import {
-    WhiteSpace,
-    Comment,
-    Delim,
-    EOF,
-    Function as FunctionToken,
-    LeftParenthesis,
-    RightParenthesis,
-    LeftSquareBracket,
-    RightSquareBracket,
-    LeftCurlyBracket,
-    RightCurlyBracket
-} from './types.js';
-
-const OFFSET_MASK = 0x00FFFFFF;
-const TYPE_SHIFT = 24;
-const balancePair = new Uint8Array(32); // 32b of memory ought to be enough for anyone (any number of tokens)
-balancePair[FunctionToken] = RightParenthesis;
-balancePair[LeftParenthesis] = RightParenthesis;
-balancePair[LeftSquareBracket] = RightSquareBracket;
-balancePair[LeftCurlyBracket] = RightCurlyBracket;
-
-function isBlockOpenerToken(tokenType) {
-    return balancePair[tokenType] !== 0;
-}
-
-export class TokenStream {
-    constructor(source, tokenize) {
-        this.setSource(source, tokenize);
-    }
-    reset() {
-        this.eof = false;
-        this.tokenIndex = -1;
-        this.tokenType = 0;
-        this.tokenStart = this.firstCharOffset;
-        this.tokenEnd = this.firstCharOffset;
-    }
-    setSource(source = '', tokenize = () => {}) {
-        source = String(source || '');
-
-        const sourceLength = source.length;
-        const offsetAndType = adoptBuffer(this.offsetAndType, source.length + 1); // +1 because of eof-token
-        const balance = adoptBuffer(this.balance, source.length + 1);
-        let tokenCount = 0;
-        let firstCharOffset = -1;
-        let balanceCloseType = 0;
-        let balanceStart = source.length;
-
-        // capture buffers
-        this.offsetAndType = null;
-        this.balance = null;
-        balance.fill(0);
-
-        tokenize(source, (type, start, end) => {
-            const index = tokenCount++;
-
-            // type & offset
-            offsetAndType[index] = (type << TYPE_SHIFT) | end;
-
-            if (firstCharOffset === -1) {
-                firstCharOffset = start;
-            }
-
-            // balance
-            balance[index] = balanceStart;
-
-            if (type === balanceCloseType) {
-                const prevBalanceStart = balance[balanceStart];
-
-                // set reference to balance end for a block opener
-                balance[balanceStart] = index;
-
-                // pop state
-                balanceStart = prevBalanceStart;
-                balanceCloseType = balancePair[offsetAndType[prevBalanceStart] >> TYPE_SHIFT];
-            } else if (isBlockOpenerToken(type)) { // check for FunctionToken, <(-token>, <[-token> and <{-token>
-                // push state
-                balanceStart = index;
-                balanceCloseType = balancePair[type];
-            }
-        });
-
-        // finalize buffers
-        offsetAndType[tokenCount] = (EOF << TYPE_SHIFT) | sourceLength; // <EOF-token>
-        balance[tokenCount] = tokenCount; // prevents false positive balance match with any token
-
-        // reverse references from balance start to end
-        // tokens
-        //   token:   a ( [ b c ] d e ) {
-        //   index:   0 1 2 3 4 5 6 7 8 9
-        // before
-        //   balance: 0 8 5 2 2 2 1 1 1 0
-        //            - > > < < < < < < -
-        // after
-        //   balance: 9 8 5 5 5 2 8 8 1 9
-        //            > > > > > < > > < >
-        for (let i = 0; i < tokenCount; i++) {
-            const balanceStart = balance[i];
-
-            if (balanceStart <= i) {
-                const balanceEnd = balance[balanceStart];
-
-                if (balanceEnd !== i) {
-                    balance[i] = balanceEnd;
-                }
-            } else if (balanceStart > tokenCount) {
-                balance[i] = tokenCount;
-            }
-        }
-
-        // balance[0] = tokenCount;
-
-        this.source = source;
-        this.firstCharOffset = firstCharOffset === -1 ? 0 : firstCharOffset;
-        this.tokenCount = tokenCount;
-        this.offsetAndType = offsetAndType;
-        this.balance = balance;
-
-        this.reset();
-        this.next();
-    }
-
-    lookupType(offset) {
-        offset += this.tokenIndex;
-
-        if (offset < this.tokenCount) {
-            return this.offsetAndType[offset] >> TYPE_SHIFT;
-        }
-
-        return EOF;
-    }
-    lookupTypeNonSC(idx) {
-        for (let offset = this.tokenIndex; offset < this.tokenCount; offset++) {
-            const tokenType = this.offsetAndType[offset] >> TYPE_SHIFT;
-
-            if (tokenType !== WhiteSpace && tokenType !== Comment) {
-                if (idx-- === 0) {
-                    return tokenType;
-                }
-            }
-        }
-
-        return EOF;
-    }
-    lookupOffset(offset) {
-        offset += this.tokenIndex;
-
-        if (offset < this.tokenCount) {
-            return this.offsetAndType[offset - 1] & OFFSET_MASK;
-        }
-
-        return this.source.length;
-    }
-    lookupOffsetNonSC(idx) {
-        for (let offset = this.tokenIndex; offset < this.tokenCount; offset++) {
-            const tokenType = this.offsetAndType[offset] >> TYPE_SHIFT;
-
-            if (tokenType !== WhiteSpace && tokenType !== Comment) {
-                if (idx-- === 0) {
-                    return offset - this.tokenIndex;
-                }
-            }
-        }
-
-        return EOF;
-    }
-    lookupValue(offset, referenceStr) {
-        offset += this.tokenIndex;
-
-        if (offset < this.tokenCount) {
-            return cmpStr(
-                this.source,
-                this.offsetAndType[offset - 1] & OFFSET_MASK,
-                this.offsetAndType[offset] & OFFSET_MASK,
-                referenceStr
-            );
-        }
-
-        return false;
-    }
-    getTokenStart(tokenIndex) {
-        if (tokenIndex === this.tokenIndex) {
-            return this.tokenStart;
-        }
-
-        if (tokenIndex > 0) {
-            return tokenIndex < this.tokenCount
-                ? this.offsetAndType[tokenIndex - 1] & OFFSET_MASK
-                : this.offsetAndType[this.tokenCount] & OFFSET_MASK;
-        }
-
-        return this.firstCharOffset;
-    }
-    substrToCursor(start) {
-        return this.source.substring(start, this.tokenStart);
-    }
-
-    isBalanceEdge(pos) {
-        return this.balance[this.tokenIndex] < pos;
-        // return this.balance[this.balance[pos]] !== this.tokenIndex;
-    }
-    isDelim(code, offset) {
-        if (offset) {
-            return (
-                this.lookupType(offset) === Delim &&
-                this.source.charCodeAt(this.lookupOffset(offset)) === code
-            );
-        }
-
-        return (
-            this.tokenType === Delim &&
-            this.source.charCodeAt(this.tokenStart) === code
-        );
-    }
-
-    skip(tokenCount) {
-        let next = this.tokenIndex + tokenCount;
-
-        if (next < this.tokenCount) {
-            this.tokenIndex = next;
-            this.tokenStart = this.offsetAndType[next - 1] & OFFSET_MASK;
-            next = this.offsetAndType[next];
-            this.tokenType = next >> TYPE_SHIFT;
-            this.tokenEnd = next & OFFSET_MASK;
-        } else {
-            this.tokenIndex = this.tokenCount;
-            this.next();
-        }
-    }
-    next() {
-        let next = this.tokenIndex + 1;
-
-        if (next < this.tokenCount) {
-            this.tokenIndex = next;
-            this.tokenStart = this.tokenEnd;
-            next = this.offsetAndType[next];
-            this.tokenType = next >> TYPE_SHIFT;
-            this.tokenEnd = next & OFFSET_MASK;
-        } else {
-            this.eof = true;
-            this.tokenIndex = this.tokenCount;
-            this.tokenType = EOF;
-            this.tokenStart = this.tokenEnd = this.source.length;
-        }
-    }
-    skipSC() {
-        while (this.tokenType === WhiteSpace || this.tokenType === Comment) {
-            this.next();
-        }
-    }
-    skipUntilBalanced(startToken, stopConsume) {
-        let cursor = startToken;
-        let balanceEnd = 0;
-        let offset = 0;
-
-        loop:
-        for (; cursor < this.tokenCount; cursor++) {
-            balanceEnd = this.balance[cursor];
-
-            // stop scanning on balance edge that points to offset before start token
-            if (balanceEnd < startToken) {
-                break loop;
-            }
-
-            offset = cursor > 0 ? this.offsetAndType[cursor - 1] & OFFSET_MASK : this.firstCharOffset;
-
-            // check stop condition
-            switch (stopConsume(this.source.charCodeAt(offset))) {
-                case 1: // just stop
-                    break loop;
-
-                case 2: // stop & included
-                    cursor++;
-                    break loop;
-
-                default:
-                    // fast forward to the end of balanced block for an open block tokens
-                    if (isBlockOpenerToken(this.offsetAndType[cursor] >> TYPE_SHIFT)) {
-                        cursor = balanceEnd;
-                    }
-            }
-        }
-
-        this.skip(cursor - this.tokenIndex);
-    }
-
-    forEachToken(fn) {
-        for (let i = 0, offset = this.firstCharOffset; i < this.tokenCount; i++) {
-            const start = offset;
-            const item = this.offsetAndType[i];
-            const end = item & OFFSET_MASK;
-            const type = item >> TYPE_SHIFT;
-
-            offset = end;
-
-            fn(type, start, end, i);
-        }
-    }
-    dump() {
-        const tokens = new Array(this.tokenCount);
-
-        this.forEachToken((type, start, end, index) => {
-            tokens[index] = {
-                idx: index,
-                type: tokenNames[type],
-                chunk: this.source.substring(start, end),
-                balance: this.balance[index]
-            };
-        });
-
-        return tokens;
-    }
-};
diff --git a/vanilla/node_modules/css-tree/lib/tokenizer/adopt-buffer.js b/vanilla/node_modules/css-tree/lib/tokenizer/adopt-buffer.js
deleted file mode 100644
index ab4566d..0000000
--- a/vanilla/node_modules/css-tree/lib/tokenizer/adopt-buffer.js
+++ /dev/null
@@ -1,9 +0,0 @@
-const MIN_SIZE = 16 * 1024;
-
-export function adoptBuffer(buffer = null, size) {
-    if (buffer === null || buffer.length < size) {
-        return new Uint32Array(Math.max(size + 1024, MIN_SIZE));
-    }
-
-    return buffer;
-};
diff --git a/vanilla/node_modules/css-tree/lib/tokenizer/char-code-definitions.js b/vanilla/node_modules/css-tree/lib/tokenizer/char-code-definitions.js
deleted file mode 100644
index 715572a..0000000
--- a/vanilla/node_modules/css-tree/lib/tokenizer/char-code-definitions.js
+++ /dev/null
@@ -1,212 +0,0 @@
-const EOF = 0;
-
-// https://drafts.csswg.org/css-syntax-3/
-// § 4.2. Definitions
-
-// digit
-// A code point between U+0030 DIGIT ZERO (0) and U+0039 DIGIT NINE (9).
-export function isDigit(code) {
-    return code >= 0x0030 && code <= 0x0039;
-}
-
-// hex digit
-// A digit, or a code point between U+0041 LATIN CAPITAL LETTER A (A) and U+0046 LATIN CAPITAL LETTER F (F),
-// or a code point between U+0061 LATIN SMALL LETTER A (a) and U+0066 LATIN SMALL LETTER F (f).
-export function isHexDigit(code) {
-    return (
-        isDigit(code) || // 0 .. 9
-        (code >= 0x0041 && code <= 0x0046) || // A .. F
-        (code >= 0x0061 && code <= 0x0066)    // a .. f
-    );
-}
-
-// uppercase letter
-// A code point between U+0041 LATIN CAPITAL LETTER A (A) and U+005A LATIN CAPITAL LETTER Z (Z).
-export function isUppercaseLetter(code) {
-    return code >= 0x0041 && code <= 0x005A;
-}
-
-// lowercase letter
-// A code point between U+0061 LATIN SMALL LETTER A (a) and U+007A LATIN SMALL LETTER Z (z).
-export function isLowercaseLetter(code) {
-    return code >= 0x0061 && code <= 0x007A;
-}
-
-// letter
-// An uppercase letter or a lowercase letter.
-export function isLetter(code) {
-    return isUppercaseLetter(code) || isLowercaseLetter(code);
-}
-
-// non-ASCII code point
-// A code point with a value equal to or greater than U+0080 <control>.
-//
-// 2024-09-02: The latest spec narrows the range for non-ASCII characters (see https://github.com/csstree/csstree/issues/188).
-// However, all modern browsers support a wider range, and strictly following the latest spec could result
-// in some CSS being parsed incorrectly, even though it works in the browser. Therefore, this function adheres
-// to the previous, broader definition of non-ASCII characters.
-export function isNonAscii(code) {
-    return code >= 0x0080;
-}
-
-// name-start code point
-// A letter, a non-ASCII code point, or U+005F LOW LINE (_).
-export function isNameStart(code) {
-    return isLetter(code) || isNonAscii(code) || code === 0x005F;
-}
-
-// name code point
-// A name-start code point, a digit, or U+002D HYPHEN-MINUS (-).
-export function isName(code) {
-    return isNameStart(code) || isDigit(code) || code === 0x002D;
-}
-
-// non-printable code point
-// A code point between U+0000 NULL and U+0008 BACKSPACE, or U+000B LINE TABULATION,
-// or a code point between U+000E SHIFT OUT and U+001F INFORMATION SEPARATOR ONE, or U+007F DELETE.
-export function isNonPrintable(code) {
-    return (
-        (code >= 0x0000 && code <= 0x0008) ||
-        (code === 0x000B) ||
-        (code >= 0x000E && code <= 0x001F) ||
-        (code === 0x007F)
-    );
-}
-
-// newline
-// U+000A LINE FEED. Note that U+000D CARRIAGE RETURN and U+000C FORM FEED are not included in this definition,
-// as they are converted to U+000A LINE FEED during preprocessing.
-// TODO: we doesn't do a preprocessing, so check a code point for U+000D CARRIAGE RETURN and U+000C FORM FEED
-export function isNewline(code) {
-    return code === 0x000A || code === 0x000D || code === 0x000C;
-}
-
-// whitespace
-// A newline, U+0009 CHARACTER TABULATION, or U+0020 SPACE.
-export function isWhiteSpace(code) {
-    return isNewline(code) || code === 0x0020 || code === 0x0009;
-}
-
-// § 4.3.8. Check if two code points are a valid escape
-export function isValidEscape(first, second) {
-    // If the first code point is not U+005C REVERSE SOLIDUS (\), return false.
-    if (first !== 0x005C) {
-        return false;
-    }
-
-    // Otherwise, if the second code point is a newline or EOF, return false.
-    if (isNewline(second) || second === EOF) {
-        return false;
-    }
-
-    // Otherwise, return true.
-    return true;
-}
-
-// § 4.3.9. Check if three code points would start an identifier
-export function isIdentifierStart(first, second, third) {
-    // Look at the first code point:
-
-    // U+002D HYPHEN-MINUS
-    if (first === 0x002D) {
-        // If the second code point is a name-start code point or a U+002D HYPHEN-MINUS,
-        // or the second and third code points are a valid escape, return true. Otherwise, return false.
-        return (
-            isNameStart(second) ||
-            second === 0x002D ||
-            isValidEscape(second, third)
-        );
-    }
-
-    // name-start code point
-    if (isNameStart(first)) {
-        // Return true.
-        return true;
-    }
-
-    // U+005C REVERSE SOLIDUS (\)
-    if (first === 0x005C) {
-        // If the first and second code points are a valid escape, return true. Otherwise, return false.
-        return isValidEscape(first, second);
-    }
-
-    // anything else
-    // Return false.
-    return false;
-}
-
-// § 4.3.10. Check if three code points would start a number
-export function isNumberStart(first, second, third) {
-    // Look at the first code point:
-
-    // U+002B PLUS SIGN (+)
-    // U+002D HYPHEN-MINUS (-)
-    if (first === 0x002B || first === 0x002D) {
-        // If the second code point is a digit, return true.
-        if (isDigit(second)) {
-            return 2;
-        }
-
-        // Otherwise, if the second code point is a U+002E FULL STOP (.)
-        // and the third code point is a digit, return true.
-        // Otherwise, return false.
-        return second === 0x002E && isDigit(third) ? 3 : 0;
-    }
-
-    // U+002E FULL STOP (.)
-    if (first === 0x002E) {
-        // If the second code point is a digit, return true. Otherwise, return false.
-        return isDigit(second) ? 2 : 0;
-    }
-
-    // digit
-    if (isDigit(first)) {
-        // Return true.
-        return 1;
-    }
-
-    // anything else
-    // Return false.
-    return 0;
-}
-
-//
-// Misc
-//
-
-// detect BOM (https://en.wikipedia.org/wiki/Byte_order_mark)
-export function isBOM(code) {
-    // UTF-16BE
-    if (code === 0xFEFF) {
-        return 1;
-    }
-
-    // UTF-16LE
-    if (code === 0xFFFE) {
-        return 1;
-    }
-
-    return 0;
-}
-
-// Fast code category
-// Only ASCII code points has a special meaning, that's why we define a maps for 0..127 codes only
-const CATEGORY = new Array(0x80);
-export const EofCategory = 0x80;
-export const WhiteSpaceCategory = 0x82;
-export const DigitCategory = 0x83;
-export const NameStartCategory = 0x84;
-export const NonPrintableCategory = 0x85;
-
-for (let i = 0; i < CATEGORY.length; i++) {
-    CATEGORY[i] =
-        isWhiteSpace(i) && WhiteSpaceCategory ||
-        isDigit(i) && DigitCategory ||
-        isNameStart(i) && NameStartCategory ||
-        isNonPrintable(i) && NonPrintableCategory ||
-        i || EofCategory;
-}
-
-export function charCodeCategory(code) {
-    return code < 0x80 ? CATEGORY[code] : NameStartCategory;
-}
diff --git a/vanilla/node_modules/css-tree/lib/tokenizer/index.js b/vanilla/node_modules/css-tree/lib/tokenizer/index.js
deleted file mode 100644
index 16df44c..0000000
--- a/vanilla/node_modules/css-tree/lib/tokenizer/index.js
+++ /dev/null
@@ -1,513 +0,0 @@
-import * as TYPE from './types.js';
-import {
-    isNewline,
-    isName,
-    isValidEscape,
-    isNumberStart,
-    isIdentifierStart,
-    isBOM,
-    charCodeCategory,
-    WhiteSpaceCategory,
-    DigitCategory,
-    NameStartCategory,
-    NonPrintableCategory
-} from './char-code-definitions.js';
-import {
-    cmpStr,
-    getNewlineLength,
-    findWhiteSpaceEnd,
-    consumeEscaped,
-    consumeName,
-    consumeNumber,
-    consumeBadUrlRemnants
-} from './utils.js';
-
-export function tokenize(source, onToken) {
-    function getCharCode(offset) {
-        return offset < sourceLength ? source.charCodeAt(offset) : 0;
-    }
-
-    // § 4.3.3. Consume a numeric token
-    function consumeNumericToken() {
-        // Consume a number and let number be the result.
-        offset = consumeNumber(source, offset);
-
-        // If the next 3 input code points would start an identifier, then:
-        if (isIdentifierStart(getCharCode(offset), getCharCode(offset + 1), getCharCode(offset + 2))) {
-            // Create a <dimension-token> with the same value and type flag as number, and a unit set initially to the empty string.
-            // Consume a name. Set the <dimension-token>’s unit to the returned value.
-            // Return the <dimension-token>.
-            type = TYPE.Dimension;
-            offset = consumeName(source, offset);
-            return;
-        }
-
-        // Otherwise, if the next input code point is U+0025 PERCENTAGE SIGN (%), consume it.
-        if (getCharCode(offset) === 0x0025) {
-            // Create a <percentage-token> with the same value as number, and return it.
-            type = TYPE.Percentage;
-            offset++;
-            return;
-        }
-
-        // Otherwise, create a <number-token> with the same value and type flag as number, and return it.
-        type = TYPE.Number;
-    }
-
-    // § 4.3.4. Consume an ident-like token
-    function consumeIdentLikeToken() {
-        const nameStartOffset = offset;
-
-        // Consume a name, and let string be the result.
-        offset = consumeName(source, offset);
-
-        // If string’s value is an ASCII case-insensitive match for "url",
-        // and the next input code point is U+0028 LEFT PARENTHESIS ((), consume it.
-        if (cmpStr(source, nameStartOffset, offset, 'url') && getCharCode(offset) === 0x0028) {
-            // While the next two input code points are whitespace, consume the next input code point.
-            offset = findWhiteSpaceEnd(source, offset + 1);
-
-            // If the next one or two input code points are U+0022 QUOTATION MARK ("), U+0027 APOSTROPHE ('),
-            // or whitespace followed by U+0022 QUOTATION MARK (") or U+0027 APOSTROPHE ('),
-            // then create a <function-token> with its value set to string and return it.
-            if (getCharCode(offset) === 0x0022 ||
-                getCharCode(offset) === 0x0027) {
-                type = TYPE.Function;
-                offset = nameStartOffset + 4;
-                return;
-            }
-
-            // Otherwise, consume a url token, and return it.
-            consumeUrlToken();
-            return;
-        }
-
-        // Otherwise, if the next input code point is U+0028 LEFT PARENTHESIS ((), consume it.
-        // Create a <function-token> with its value set to string and return it.
-        if (getCharCode(offset) === 0x0028) {
-            type = TYPE.Function;
-            offset++;
-            return;
-        }
-
-        // Otherwise, create an <ident-token> with its value set to string and return it.
-        type = TYPE.Ident;
-    }
-
-    // § 4.3.5. Consume a string token
-    function consumeStringToken(endingCodePoint) {
-        // This algorithm may be called with an ending code point, which denotes the code point
-        // that ends the string. If an ending code point is not specified,
-        // the current input code point is used.
-        if (!endingCodePoint) {
-            endingCodePoint = getCharCode(offset++);
-        }
-
-        // Initially create a <string-token> with its value set to the empty string.
-        type = TYPE.String;
-
-        // Repeatedly consume the next input code point from the stream:
-        for (; offset < source.length; offset++) {
-            const code = source.charCodeAt(offset);
-
-            switch (charCodeCategory(code)) {
-                // ending code point
-                case endingCodePoint:
-                    // Return the <string-token>.
-                    offset++;
-                    return;
-
-                    // EOF
-                    // case EofCategory:
-                    // This is a parse error. Return the <string-token>.
-                    // return;
-
-                // newline
-                case WhiteSpaceCategory:
-                    if (isNewline(code)) {
-                        // This is a parse error. Reconsume the current input code point,
-                        // create a <bad-string-token>, and return it.
-                        offset += getNewlineLength(source, offset, code);
-                        type = TYPE.BadString;
-                        return;
-                    }
-                    break;
-
-                // U+005C REVERSE SOLIDUS (\)
-                case 0x005C:
-                    // If the next input code point is EOF, do nothing.
-                    if (offset === source.length - 1) {
-                        break;
-                    }
-
-                    const nextCode = getCharCode(offset + 1);
-
-                    // Otherwise, if the next input code point is a newline, consume it.
-                    if (isNewline(nextCode)) {
-                        offset += getNewlineLength(source, offset + 1, nextCode);
-                    } else if (isValidEscape(code, nextCode)) {
-                        // Otherwise, (the stream starts with a valid escape) consume
-                        // an escaped code point and append the returned code point to
-                        // the <string-token>’s value.
-                        offset = consumeEscaped(source, offset) - 1;
-                    }
-                    break;
-
-                // anything else
-                // Append the current input code point to the <string-token>’s value.
-            }
-        }
-    }
-
-    // § 4.3.6. Consume a url token
-    // Note: This algorithm assumes that the initial "url(" has already been consumed.
-    // This algorithm also assumes that it’s being called to consume an "unquoted" value, like url(foo).
-    // A quoted value, like url("foo"), is parsed as a <function-token>. Consume an ident-like token
-    // automatically handles this distinction; this algorithm shouldn’t be called directly otherwise.
-    function consumeUrlToken() {
-        // Initially create a <url-token> with its value set to the empty string.
-        type = TYPE.Url;
-
-        // Consume as much whitespace as possible.
-        offset = findWhiteSpaceEnd(source, offset);
-
-        // Repeatedly consume the next input code point from the stream:
-        for (; offset < source.length; offset++) {
-            const code = source.charCodeAt(offset);
-
-            switch (charCodeCategory(code)) {
-                // U+0029 RIGHT PARENTHESIS ())
-                case 0x0029:
-                    // Return the <url-token>.
-                    offset++;
-                    return;
-
-                    // EOF
-                    // case EofCategory:
-                    // This is a parse error. Return the <url-token>.
-                    // return;
-
-                // whitespace
-                case WhiteSpaceCategory:
-                    // Consume as much whitespace as possible.
-                    offset = findWhiteSpaceEnd(source, offset);
-
-                    // If the next input code point is U+0029 RIGHT PARENTHESIS ()) or EOF,
-                    // consume it and return the <url-token>
-                    // (if EOF was encountered, this is a parse error);
-                    if (getCharCode(offset) === 0x0029 || offset >= source.length) {
-                        if (offset < source.length) {
-                            offset++;
-                        }
-                        return;
-                    }
-
-                    // otherwise, consume the remnants of a bad url, create a <bad-url-token>,
-                    // and return it.
-                    offset = consumeBadUrlRemnants(source, offset);
-                    type = TYPE.BadUrl;
-                    return;
-
-                // U+0022 QUOTATION MARK (")
-                // U+0027 APOSTROPHE (')
-                // U+0028 LEFT PARENTHESIS (()
-                // non-printable code point
-                case 0x0022:
-                case 0x0027:
-                case 0x0028:
-                case NonPrintableCategory:
-                    // This is a parse error. Consume the remnants of a bad url,
-                    // create a <bad-url-token>, and return it.
-                    offset = consumeBadUrlRemnants(source, offset);
-                    type = TYPE.BadUrl;
-                    return;
-
-                // U+005C REVERSE SOLIDUS (\)
-                case 0x005C:
-                    // If the stream starts with a valid escape, consume an escaped code point and
-                    // append the returned code point to the <url-token>’s value.
-                    if (isValidEscape(code, getCharCode(offset + 1))) {
-                        offset = consumeEscaped(source, offset) - 1;
-                        break;
-                    }
-
-                    // Otherwise, this is a parse error. Consume the remnants of a bad url,
-                    // create a <bad-url-token>, and return it.
-                    offset = consumeBadUrlRemnants(source, offset);
-                    type = TYPE.BadUrl;
-                    return;
-
-                // anything else
-                // Append the current input code point to the <url-token>’s value.
-            }
-        }
-    }
-
-    // ensure source is a string
-    source = String(source || '');
-
-    const sourceLength = source.length;
-    let start = isBOM(getCharCode(0));
-    let offset = start;
-    let type;
-
-    // https://drafts.csswg.org/css-syntax-3/#consume-token
-    // § 4.3.1. Consume a token
-    while (offset < sourceLength) {
-        const code = source.charCodeAt(offset);
-
-        switch (charCodeCategory(code)) {
-            // whitespace
-            case WhiteSpaceCategory:
-                // Consume as much whitespace as possible. Return a <whitespace-token>.
-                type = TYPE.WhiteSpace;
-                offset = findWhiteSpaceEnd(source, offset + 1);
-                break;
-
-            // U+0022 QUOTATION MARK (")
-            case 0x0022:
-                // Consume a string token and return it.
-                consumeStringToken();
-                break;
-
-            // U+0023 NUMBER SIGN (#)
-            case 0x0023:
-                // If the next input code point is a name code point or the next two input code points are a valid escape, then:
-                if (isName(getCharCode(offset + 1)) || isValidEscape(getCharCode(offset + 1), getCharCode(offset + 2))) {
-                    // Create a <hash-token>.
-                    type = TYPE.Hash;
-
-                    // If the next 3 input code points would start an identifier, set the <hash-token>’s type flag to "id".
-                    // if (isIdentifierStart(getCharCode(offset + 1), getCharCode(offset + 2), getCharCode(offset + 3))) {
-                    //     // TODO: set id flag
-                    // }
-
-                    // Consume a name, and set the <hash-token>’s value to the returned string.
-                    offset = consumeName(source, offset + 1);
-
-                    // Return the <hash-token>.
-                } else {
-                    // Otherwise, return a <delim-token> with its value set to the current input code point.
-                    type = TYPE.Delim;
-                    offset++;
-                }
-
-                break;
-
-            // U+0027 APOSTROPHE (')
-            case 0x0027:
-                // Consume a string token and return it.
-                consumeStringToken();
-                break;
-
-            // U+0028 LEFT PARENTHESIS (()
-            case 0x0028:
-                // Return a <(-token>.
-                type = TYPE.LeftParenthesis;
-                offset++;
-                break;
-
-            // U+0029 RIGHT PARENTHESIS ())
-            case 0x0029:
-                // Return a <)-token>.
-                type = TYPE.RightParenthesis;
-                offset++;
-                break;
-
-            // U+002B PLUS SIGN (+)
-            case 0x002B:
-                // If the input stream starts with a number, ...
-                if (isNumberStart(code, getCharCode(offset + 1), getCharCode(offset + 2))) {
-                    // ... reconsume the current input code point, consume a numeric token, and return it.
-                    consumeNumericToken();
-                } else {
-                    // Otherwise, return a <delim-token> with its value set to the current input code point.
-                    type = TYPE.Delim;
-                    offset++;
-                }
-                break;
-
-            // U+002C COMMA (,)
-            case 0x002C:
-                // Return a <comma-token>.
-                type = TYPE.Comma;
-                offset++;
-                break;
-
-            // U+002D HYPHEN-MINUS (-)
-            case 0x002D:
-                // If the input stream starts with a number, reconsume the current input code point, consume a numeric token, and return it.
-                if (isNumberStart(code, getCharCode(offset + 1), getCharCode(offset + 2))) {
-                    consumeNumericToken();
-                } else {
-                    // Otherwise, if the next 2 input code points are U+002D HYPHEN-MINUS U+003E GREATER-THAN SIGN (->), consume them and return a <CDC-token>.
-                    if (getCharCode(offset + 1) === 0x002D &&
-                        getCharCode(offset + 2) === 0x003E) {
-                        type = TYPE.CDC;
-                        offset = offset + 3;
-                    } else {
-                        // Otherwise, if the input stream starts with an identifier, ...
-                        if (isIdentifierStart(code, getCharCode(offset + 1), getCharCode(offset + 2))) {
-                            // ... reconsume the current input code point, consume an ident-like token, and return it.
-                            consumeIdentLikeToken();
-                        } else {
-                            // Otherwise, return a <delim-token> with its value set to the current input code point.
-                            type = TYPE.Delim;
-                            offset++;
-                        }
-                    }
-                }
-                break;
-
-            // U+002E FULL STOP (.)
-            case 0x002E:
-                // If the input stream starts with a number, ...
-                if (isNumberStart(code, getCharCode(offset + 1), getCharCode(offset + 2))) {
-                    // ... reconsume the current input code point, consume a numeric token, and return it.
-                    consumeNumericToken();
-                } else {
-                    // Otherwise, return a <delim-token> with its value set to the current input code point.
-                    type = TYPE.Delim;
-                    offset++;
-                }
-
-                break;
-
-            // U+002F SOLIDUS (/)
-            case 0x002F:
-                // If the next two input code point are U+002F SOLIDUS (/) followed by a U+002A ASTERISK (*),
-                if (getCharCode(offset + 1) === 0x002A) {
-                    // ... consume them and all following code points up to and including the first U+002A ASTERISK (*)
-                    // followed by a U+002F SOLIDUS (/), or up to an EOF code point.
-                    type = TYPE.Comment;
-                    offset = source.indexOf('*/', offset + 2);
-                    offset = offset === -1 ? source.length : offset + 2;
-                } else {
-                    type = TYPE.Delim;
-                    offset++;
-                }
-                break;
-
-            // U+003A COLON (:)
-            case 0x003A:
-                // Return a <colon-token>.
-                type = TYPE.Colon;
-                offset++;
-                break;
-
-            // U+003B SEMICOLON (;)
-            case 0x003B:
-                // Return a <semicolon-token>.
-                type = TYPE.Semicolon;
-                offset++;
-                break;
-
-            // U+003C LESS-THAN SIGN (<)
-            case 0x003C:
-                // If the next 3 input code points are U+0021 EXCLAMATION MARK U+002D HYPHEN-MINUS U+002D HYPHEN-MINUS (!--), ...
-                if (getCharCode(offset + 1) === 0x0021 &&
-                    getCharCode(offset + 2) === 0x002D &&
-                    getCharCode(offset + 3) === 0x002D) {
-                    // ... consume them and return a <CDO-token>.
-                    type = TYPE.CDO;
-                    offset = offset + 4;
-                } else {
-                    // Otherwise, return a <delim-token> with its value set to the current input code point.
-                    type = TYPE.Delim;
-                    offset++;
-                }
-
-                break;
-
-            // U+0040 COMMERCIAL AT (@)
-            case 0x0040:
-                // If the next 3 input code points would start an identifier, ...
-                if (isIdentifierStart(getCharCode(offset + 1), getCharCode(offset + 2), getCharCode(offset + 3))) {
-                    // ... consume a name, create an <at-keyword-token> with its value set to the returned value, and return it.
-                    type = TYPE.AtKeyword;
-                    offset = consumeName(source, offset + 1);
-                } else {
-                    // Otherwise, return a <delim-token> with its value set to the current input code point.
-                    type = TYPE.Delim;
-                    offset++;
-                }
-
-                break;
-
-            // U+005B LEFT SQUARE BRACKET ([)
-            case 0x005B:
-                // Return a <[-token>.
-                type = TYPE.LeftSquareBracket;
-                offset++;
-                break;
-
-            // U+005C REVERSE SOLIDUS (\)
-            case 0x005C:
-                // If the input stream starts with a valid escape, ...
-                if (isValidEscape(code, getCharCode(offset + 1))) {
-                    // ... reconsume the current input code point, consume an ident-like token, and return it.
-                    consumeIdentLikeToken();
-                } else {
-                    // Otherwise, this is a parse error. Return a <delim-token> with its value set to the current input code point.
-                    type = TYPE.Delim;
-                    offset++;
-                }
-                break;
-
-            // U+005D RIGHT SQUARE BRACKET (])
-            case 0x005D:
-                // Return a <]-token>.
-                type = TYPE.RightSquareBracket;
-                offset++;
-                break;
-
-            // U+007B LEFT CURLY BRACKET ({)
-            case 0x007B:
-                // Return a <{-token>.
-                type = TYPE.LeftCurlyBracket;
-                offset++;
-                break;
-
-            // U+007D RIGHT CURLY BRACKET (})
-            case 0x007D:
-                // Return a <}-token>.
-                type = TYPE.RightCurlyBracket;
-                offset++;
-                break;
-
-            // digit
-            case DigitCategory:
-                // Reconsume the current input code point, consume a numeric token, and return it.
-                consumeNumericToken();
-                break;
-
-            // name-start code point
-            case NameStartCategory:
-                // Reconsume the current input code point, consume an ident-like token, and return it.
-                consumeIdentLikeToken();
-                break;
-
-                // EOF
-                // case EofCategory:
-                // Return an <EOF-token>.
-                // break;
-
-            // anything else
-            default:
-                // Return a <delim-token> with its value set to the current input code point.
-                type = TYPE.Delim;
-                offset++;
-        }
-
-        // put token to stream
-        onToken(type, start, start = offset);
-    }
-}
-
-export * from './types.js';
-export * as tokenTypes from './types.js';
-export { default as tokenNames } from './names.js';
-export * from './char-code-definitions.js';
-export * from './utils.js';
-export * from './OffsetToLocation.js';
-export * from './TokenStream.js';
diff --git a/vanilla/node_modules/css-tree/lib/tokenizer/names.js b/vanilla/node_modules/css-tree/lib/tokenizer/names.js
deleted file mode 100644
index 54831bd..0000000
--- a/vanilla/node_modules/css-tree/lib/tokenizer/names.js
+++ /dev/null
@@ -1,28 +0,0 @@
-export default [
-    'EOF-token',
-    'ident-token',
-    'function-token',
-    'at-keyword-token',
-    'hash-token',
-    'string-token',
-    'bad-string-token',
-    'url-token',
-    'bad-url-token',
-    'delim-token',
-    'number-token',
-    'percentage-token',
-    'dimension-token',
-    'whitespace-token',
-    'CDO-token',
-    'CDC-token',
-    'colon-token',
-    'semicolon-token',
-    'comma-token',
-    '[-token',
-    ']-token',
-    '(-token',
-    ')-token',
-    '{-token',
-    '}-token',
-    'comment-token'
-];
diff --git a/vanilla/node_modules/css-tree/lib/tokenizer/types.js b/vanilla/node_modules/css-tree/lib/tokenizer/types.js
deleted file mode 100644
index 5018569..0000000
--- a/vanilla/node_modules/css-tree/lib/tokenizer/types.js
+++ /dev/null
@@ -1,28 +0,0 @@
-// CSS Syntax Module Level 3
-// https://www.w3.org/TR/css-syntax-3/
-export const EOF = 0;                 // <EOF-token>
-export const Ident = 1;               // <ident-token>
-export const Function = 2;            // <function-token>
-export const AtKeyword = 3;           // <at-keyword-token>
-export const Hash = 4;                // <hash-token>
-export const String = 5;              // <string-token>
-export const BadString = 6;           // <bad-string-token>
-export const Url = 7;                 // <url-token>
-export const BadUrl = 8;              // <bad-url-token>
-export const Delim = 9;               // <delim-token>
-export const Number = 10;             // <number-token>
-export const Percentage = 11;         // <percentage-token>
-export const Dimension = 12;          // <dimension-token>
-export const WhiteSpace = 13;         // <whitespace-token>
-export const CDO = 14;                // <CDO-token>
-export const CDC = 15;                // <CDC-token>
-export const Colon = 16;              // <colon-token>     :
-export const Semicolon = 17;          // <semicolon-token> ;
-export const Comma = 18;              // <comma-token>     ,
-export const LeftSquareBracket = 19;  // <[-token>
-export const RightSquareBracket = 20; // <]-token>
-export const LeftParenthesis = 21;    // <(-token>
-export const RightParenthesis = 22;   // <)-token>
-export const LeftCurlyBracket = 23;   // <{-token>
-export const RightCurlyBracket = 24;  // <}-token>
-export const Comment = 25;
diff --git a/vanilla/node_modules/css-tree/lib/tokenizer/utils.js b/vanilla/node_modules/css-tree/lib/tokenizer/utils.js
deleted file mode 100644
index c131ec5..0000000
--- a/vanilla/node_modules/css-tree/lib/tokenizer/utils.js
+++ /dev/null
@@ -1,254 +0,0 @@
-import {
-    isDigit,
-    isHexDigit,
-    isUppercaseLetter,
-    isName,
-    isWhiteSpace,
-    isValidEscape
-} from './char-code-definitions.js';
-
-function getCharCode(source, offset) {
-    return offset < source.length ? source.charCodeAt(offset) : 0;
-}
-
-export function getNewlineLength(source, offset, code) {
-    if (code === 13 /* \r */ && getCharCode(source, offset + 1) === 10 /* \n */) {
-        return 2;
-    }
-
-    return 1;
-}
-
-export function cmpChar(testStr, offset, referenceCode) {
-    let code = testStr.charCodeAt(offset);
-
-    // code.toLowerCase() for A..Z
-    if (isUppercaseLetter(code)) {
-        code = code | 32;
-    }
-
-    return code === referenceCode;
-}
-
-export function cmpStr(testStr, start, end, referenceStr) {
-    if (end - start !== referenceStr.length) {
-        return false;
-    }
-
-    if (start < 0 || end > testStr.length) {
-        return false;
-    }
-
-    for (let i = start; i < end; i++) {
-        const referenceCode = referenceStr.charCodeAt(i - start);
-        let testCode = testStr.charCodeAt(i);
-
-        // testCode.toLowerCase() for A..Z
-        if (isUppercaseLetter(testCode)) {
-            testCode = testCode | 32;
-        }
-
-        if (testCode !== referenceCode) {
-            return false;
-        }
-    }
-
-    return true;
-}
-
-export function findWhiteSpaceStart(source, offset) {
-    for (; offset >= 0; offset--) {
-        if (!isWhiteSpace(source.charCodeAt(offset))) {
-            break;
-        }
-    }
-
-    return offset + 1;
-}
-
-export function findWhiteSpaceEnd(source, offset) {
-    for (; offset < source.length; offset++) {
-        if (!isWhiteSpace(source.charCodeAt(offset))) {
-            break;
-        }
-    }
-
-    return offset;
-}
-
-export function findDecimalNumberEnd(source, offset) {
-    for (; offset < source.length; offset++) {
-        if (!isDigit(source.charCodeAt(offset))) {
-            break;
-        }
-    }
-
-    return offset;
-}
-
-// § 4.3.7. Consume an escaped code point
-export function consumeEscaped(source, offset) {
-    // It assumes that the U+005C REVERSE SOLIDUS (\) has already been consumed and
-    // that the next input code point has already been verified to be part of a valid escape.
-    offset += 2;
-
-    // hex digit
-    if (isHexDigit(getCharCode(source, offset - 1))) {
-        // Consume as many hex digits as possible, but no more than 5.
-        // Note that this means 1-6 hex digits have been consumed in total.
-        for (const maxOffset = Math.min(source.length, offset + 5); offset < maxOffset; offset++) {
-            if (!isHexDigit(getCharCode(source, offset))) {
-                break;
-            }
-        }
-
-        // If the next input code point is whitespace, consume it as well.
-        const code = getCharCode(source, offset);
-        if (isWhiteSpace(code)) {
-            offset += getNewlineLength(source, offset, code);
-        }
-    }
-
-    return offset;
-}
-
-// §4.3.11. Consume a name
-// Note: This algorithm does not do the verification of the first few code points that are necessary
-// to ensure the returned code points would constitute an <ident-token>. If that is the intended use,
-// ensure that the stream starts with an identifier before calling this algorithm.
-export function consumeName(source, offset) {
-    // Let result initially be an empty string.
-    // Repeatedly consume the next input code point from the stream:
-    for (; offset < source.length; offset++) {
-        const code = source.charCodeAt(offset);
-
-        // name code point
-        if (isName(code)) {
-            // Append the code point to result.
-            continue;
-        }
-
-        // the stream starts with a valid escape
-        if (isValidEscape(code, getCharCode(source, offset + 1))) {
-            // Consume an escaped code point. Append the returned code point to result.
-            offset = consumeEscaped(source, offset) - 1;
-            continue;
-        }
-
-        // anything else
-        // Reconsume the current input code point. Return result.
-        break;
-    }
-
-    return offset;
-}
-
-// §4.3.12. Consume a number
-export function consumeNumber(source, offset) {
-    let code = source.charCodeAt(offset);
-
-    // 2. If the next input code point is U+002B PLUS SIGN (+) or U+002D HYPHEN-MINUS (-),
-    // consume it and append it to repr.
-    if (code === 0x002B || code === 0x002D) {
-        code = source.charCodeAt(offset += 1);
-    }
-
-    // 3. While the next input code point is a digit, consume it and append it to repr.
-    if (isDigit(code)) {
-        offset = findDecimalNumberEnd(source, offset + 1);
-        code = source.charCodeAt(offset);
-    }
-
-    // 4. If the next 2 input code points are U+002E FULL STOP (.) followed by a digit, then:
-    if (code === 0x002E && isDigit(source.charCodeAt(offset + 1))) {
-        // 4.1 Consume them.
-        // 4.2 Append them to repr.
-        offset += 2;
-
-        // 4.3 Set type to "number".
-        // TODO
-
-        // 4.4 While the next input code point is a digit, consume it and append it to repr.
-
-        offset = findDecimalNumberEnd(source, offset);
-    }
-
-    // 5. If the next 2 or 3 input code points are U+0045 LATIN CAPITAL LETTER E (E)
-    // or U+0065 LATIN SMALL LETTER E (e), ... , followed by a digit, then:
-    if (cmpChar(source, offset, 101 /* e */)) {
-        let sign = 0;
-        code = source.charCodeAt(offset + 1);
-
-        // ... optionally followed by U+002D HYPHEN-MINUS (-) or U+002B PLUS SIGN (+) ...
-        if (code === 0x002D || code === 0x002B) {
-            sign = 1;
-            code = source.charCodeAt(offset + 2);
-        }
-
-        // ... followed by a digit
-        if (isDigit(code)) {
-            // 5.1 Consume them.
-            // 5.2 Append them to repr.
-
-            // 5.3 Set type to "number".
-            // TODO
-
-            // 5.4 While the next input code point is a digit, consume it and append it to repr.
-            offset = findDecimalNumberEnd(source, offset + 1 + sign + 1);
-        }
-    }
-
-    return offset;
-}
-
-// § 4.3.14. Consume the remnants of a bad url
-// ... its sole use is to consume enough of the input stream to reach a recovery point
-// where normal tokenizing can resume.
-export function consumeBadUrlRemnants(source, offset) {
-    // Repeatedly consume the next input code point from the stream:
-    for (; offset < source.length; offset++) {
-        const code = source.charCodeAt(offset);
-
-        // U+0029 RIGHT PARENTHESIS ())
-        // EOF
-        if (code === 0x0029) {
-            // Return.
-            offset++;
-            break;
-        }
-
-        if (isValidEscape(code, getCharCode(source, offset + 1))) {
-            // Consume an escaped code point.
-            // Note: This allows an escaped right parenthesis ("\)") to be encountered
-            // without ending the <bad-url-token>. This is otherwise identical to
-            // the "anything else" clause.
-            offset = consumeEscaped(source, offset);
-        }
-    }
-
-    return offset;
-}
-
-// § 4.3.7. Consume an escaped code point
-// Note: This algorithm assumes that escaped is valid without leading U+005C REVERSE SOLIDUS (\)
-export function decodeEscaped(escaped) {
-    // Single char escaped that's not a hex digit
-    if (escaped.length === 1 && !isHexDigit(escaped.charCodeAt(0))) {
-        return escaped[0];
-    }
-
-    // Interpret the hex digits as a hexadecimal number.
-    let code = parseInt(escaped, 16);
-
-    if (
-        (code === 0) ||                       // If this number is zero,
-        (code >= 0xD800 && code <= 0xDFFF) || // or is for a surrogate,
-        (code > 0x10FFFF)                     // or is greater than the maximum allowed code point
-    ) {
-        // ... return U+FFFD REPLACEMENT CHARACTER
-        code = 0xFFFD;
-    }
-
-    // Otherwise, return the code point with that value.
-    return String.fromCodePoint(code);
-}