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fix(core): re-expose strip-source-code (#18955)
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packages/nx/src/plugins/js/project-graph/build-dependencies/strip-source-code.ts
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,178 @@ | ||
| import type { Scanner } from 'typescript'; | ||
|
|
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| let SyntaxKind: typeof import('typescript').SyntaxKind; | ||
|
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| /** | ||
| * @deprecated This is deprecated and will be removed in Nx 18. | ||
| * This was not intended to be exposed. | ||
| * Please talk to us if you need this. | ||
| */ | ||
| export function stripSourceCode(scanner: Scanner, contents: string): string { | ||
| if (!SyntaxKind) { | ||
| SyntaxKind = require('typescript').SyntaxKind; | ||
| } | ||
|
|
||
| if (contents.indexOf('loadChildren') > -1) { | ||
| return contents; | ||
| } | ||
|
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| scanner.setText(contents); | ||
| let token = scanner.scan(); | ||
| let lastNonTriviaToken = SyntaxKind.Unknown; | ||
| const statements = []; | ||
| const templateStack = []; | ||
| let ignoringLine = false; | ||
| let braceDepth = 0; | ||
| let start = null; | ||
| while (token !== SyntaxKind.EndOfFileToken) { | ||
| const currentToken = token; | ||
| const potentialStart = scanner.getStartPos(); | ||
| switch (token) { | ||
| case SyntaxKind.MultiLineCommentTrivia: | ||
| case SyntaxKind.SingleLineCommentTrivia: { | ||
| const isMultiLineCommentTrivia = | ||
| token === SyntaxKind.MultiLineCommentTrivia; | ||
| const start = potentialStart + 2; | ||
| token = scanner.scan(); | ||
| const end = scanner.getStartPos() - (isMultiLineCommentTrivia ? 2 : 0); | ||
| const comment = contents.substring(start, end).trim(); | ||
| if (comment === 'nx-ignore-next-line') { | ||
| // reading till the end of the line | ||
| while ( | ||
| token === SyntaxKind.WhitespaceTrivia || | ||
| token === SyntaxKind.NewLineTrivia | ||
| ) { | ||
| token = scanner.scan(); | ||
| } | ||
| ignoringLine = true; | ||
| } | ||
| break; | ||
| } | ||
|
|
||
| case SyntaxKind.NewLineTrivia: { | ||
| ignoringLine = false; | ||
| token = scanner.scan(); | ||
| break; | ||
| } | ||
|
|
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| case SyntaxKind.RequireKeyword: | ||
| case SyntaxKind.ImportKeyword: { | ||
| token = scanner.scan(); | ||
| if (ignoringLine) { | ||
| break; | ||
| } | ||
| while ( | ||
| token === SyntaxKind.WhitespaceTrivia || | ||
| token === SyntaxKind.NewLineTrivia | ||
| ) { | ||
| token = scanner.scan(); | ||
| } | ||
| start = potentialStart; | ||
| break; | ||
| } | ||
|
|
||
| case SyntaxKind.TemplateHead: { | ||
| templateStack.push(braceDepth); | ||
| braceDepth = 0; | ||
| token = scanner.scan(); | ||
| break; | ||
| } | ||
|
|
||
| case SyntaxKind.SlashToken: { | ||
| if (shouldRescanSlashToken(lastNonTriviaToken)) { | ||
| token = scanner.reScanSlashToken(); | ||
| } | ||
| token = scanner.scan(); | ||
| break; | ||
| } | ||
|
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| case SyntaxKind.OpenBraceToken: { | ||
| ++braceDepth; | ||
| token = scanner.scan(); | ||
| break; | ||
| } | ||
|
|
||
| case SyntaxKind.CloseBraceToken: { | ||
| if (braceDepth) { | ||
| --braceDepth; | ||
| } else if (templateStack.length) { | ||
| token = scanner.reScanTemplateToken(false); | ||
| if (token === SyntaxKind.LastTemplateToken) { | ||
| braceDepth = templateStack.pop(); | ||
| } | ||
| } | ||
| token = scanner.scan(); | ||
| break; | ||
| } | ||
|
|
||
| case SyntaxKind.ExportKeyword: { | ||
| token = scanner.scan(); | ||
| if (ignoringLine) { | ||
| break; | ||
| } | ||
| while ( | ||
| token === SyntaxKind.WhitespaceTrivia || | ||
| token === SyntaxKind.NewLineTrivia | ||
| ) { | ||
| token = scanner.scan(); | ||
| } | ||
| if ( | ||
| token === SyntaxKind.OpenBraceToken || | ||
| token === SyntaxKind.AsteriskToken || | ||
| token === SyntaxKind.TypeKeyword | ||
| ) { | ||
| start = potentialStart; | ||
| } | ||
| break; | ||
| } | ||
|
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||
| case SyntaxKind.StringLiteral: { | ||
| if (start !== null) { | ||
| token = scanner.scan(); | ||
| if (token === SyntaxKind.CloseParenToken) { | ||
| token = scanner.scan(); | ||
| } | ||
| const end = scanner.getStartPos(); | ||
| statements.push(contents.substring(start, end)); | ||
| start = null; | ||
| } else { | ||
| token = scanner.scan(); | ||
| } | ||
| break; | ||
| } | ||
|
|
||
| default: { | ||
| token = scanner.scan(); | ||
| } | ||
| } | ||
|
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| if (currentToken > SyntaxKind.LastTriviaToken) { | ||
| lastNonTriviaToken = currentToken; | ||
| } | ||
| } | ||
|
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| return statements.join('\n'); | ||
| } | ||
|
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| function shouldRescanSlashToken( | ||
| lastNonTriviaToken: import('typescript').SyntaxKind | ||
| ) { | ||
| switch (lastNonTriviaToken) { | ||
| case SyntaxKind.Identifier: | ||
| case SyntaxKind.StringLiteral: | ||
| case SyntaxKind.NumericLiteral: | ||
| case SyntaxKind.BigIntLiteral: | ||
| case SyntaxKind.RegularExpressionLiteral: | ||
| case SyntaxKind.ThisKeyword: | ||
| case SyntaxKind.PlusPlusToken: | ||
| case SyntaxKind.MinusMinusToken: | ||
| case SyntaxKind.CloseParenToken: | ||
| case SyntaxKind.CloseBracketToken: | ||
| case SyntaxKind.CloseBraceToken: | ||
| case SyntaxKind.TrueKeyword: | ||
| case SyntaxKind.FalseKeyword: | ||
| return false; | ||
| default: | ||
| return true; | ||
| } | ||
| } |
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