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fix: use
strip-literal to strip string lterals
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,145 +1,5 @@ | ||
| import type { RollupError } from 'rollup' | ||
| import { multilineCommentsRE, singlelineCommentsRE } from './utils' | ||
|
|
||
| // bank on the non-overlapping nature of regex matches and combine all filters into one giant regex | ||
| // /`([^`\$\{\}]|\$\{(`|\g<1>)*\})*`/g can match nested string template | ||
| // but js not support match expression(\g<0>). so clean string template(`...`) in other ways. | ||
| const stringsRE = /"([^"\r\n]|(?<=\\)")*"|'([^'\r\n]|(?<=\\)')*'/g | ||
| const regexRE = /\/.*?(?<!\\)\/[gimsuy]*/g | ||
| const cleanerRE = new RegExp( | ||
| `${stringsRE.source}|${multilineCommentsRE.source}|${singlelineCommentsRE.source}`, | ||
| 'g' | ||
| ) | ||
|
|
||
| const blankReplacer = (s: string) => ' '.repeat(s.length) | ||
| const stringBlankReplacer = (s: string) => | ||
| `${s[0]}${'\0'.repeat(s.length - 2)}${s[0]}` | ||
|
|
||
| export function emptyString(raw: string): string { | ||
| let res = raw | ||
| .replace(cleanerRE, (s: string) => | ||
| s[0] === '/' ? blankReplacer(s) : stringBlankReplacer(s) | ||
| ) | ||
| .replace(regexRE, (s) => stringBlankReplacer(s)) | ||
|
|
||
| let lastEnd = 0 | ||
| let start = 0 | ||
| while ((start = res.indexOf('`', lastEnd)) >= 0) { | ||
| let clean | ||
| ;[clean, lastEnd] = lexStringTemplateExpression(res, start) | ||
| res = replaceAt(res, start, lastEnd, clean) | ||
| } | ||
|
|
||
| return res | ||
| } | ||
| import { multilineCommentsRE } from './utils' | ||
|
|
||
| export function emptyCssComments(raw: string) { | ||
| return raw.replace(multilineCommentsRE, blankReplacer) | ||
| } | ||
|
|
||
| const enum LexerState { | ||
| // template string | ||
| inTemplateString, | ||
| inInterpolationExpression, | ||
| inObjectExpression, | ||
| // strings | ||
| inSingleQuoteString, | ||
| inDoubleQuoteString, | ||
| // comments | ||
| inMultilineCommentsRE, | ||
| inSinglelineCommentsRE | ||
| } | ||
|
|
||
| function replaceAt( | ||
| string: string, | ||
| start: number, | ||
| end: number, | ||
| replacement: string | ||
| ): string { | ||
| return string.slice(0, start) + replacement + string.slice(end) | ||
| } | ||
|
|
||
| /** | ||
| * lex string template and clean it. | ||
| */ | ||
| function lexStringTemplateExpression( | ||
| code: string, | ||
| start: number | ||
| ): [string, number] { | ||
| let state = LexerState.inTemplateString as LexerState | ||
| let clean = '`' | ||
| const opStack: LexerState[] = [state] | ||
|
|
||
| function pushStack(newState: LexerState) { | ||
| state = newState | ||
| opStack.push(state) | ||
| } | ||
|
|
||
| function popStack() { | ||
| opStack.pop() | ||
| state = opStack[opStack.length - 1] | ||
| } | ||
|
|
||
| let i = start + 1 | ||
| outer: for (; i < code.length; i++) { | ||
| const char = code.charAt(i) | ||
| switch (state) { | ||
| case LexerState.inTemplateString: | ||
| if (char === '$' && code.charAt(i + 1) === '{') { | ||
| pushStack(LexerState.inInterpolationExpression) | ||
| clean += '${' | ||
| i++ // jump next | ||
| } else if (char === '`') { | ||
| popStack() | ||
| clean += char | ||
| if (opStack.length === 0) { | ||
| break outer | ||
| } | ||
| } else { | ||
| clean += '\0' | ||
| } | ||
| break | ||
| case LexerState.inInterpolationExpression: | ||
| if (char === '{') { | ||
| pushStack(LexerState.inObjectExpression) | ||
| clean += char | ||
| } else if (char === '}') { | ||
| popStack() | ||
| clean += char | ||
| } else if (char === '`') { | ||
| pushStack(LexerState.inTemplateString) | ||
| clean += char | ||
| } else { | ||
| clean += char | ||
| } | ||
| break | ||
| case LexerState.inObjectExpression: | ||
| if (char === '}') { | ||
| popStack() | ||
| clean += char | ||
| } else if (char === '`') { | ||
| pushStack(LexerState.inTemplateString) | ||
| clean += char | ||
| } else { | ||
| clean += char | ||
| } | ||
| break | ||
| default: | ||
| throw new Error('unknown string template lexer state') | ||
| } | ||
| } | ||
|
|
||
| if (opStack.length !== 0) { | ||
| error(start) | ||
| } | ||
|
|
||
| return [clean, i + 1] | ||
| } | ||
|
|
||
| function error(pos: number) { | ||
| const err = new Error( | ||
| `can not match string template expression.` | ||
| ) as RollupError | ||
| err.pos = pos | ||
| throw err | ||
| return raw.replace(multilineCommentsRE, (s) => ' '.repeat(s.length)) | ||
| } |
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