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11 KiB
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{"version":3,"names":["_sourceMap","require","_printer","normalizeOptions","code","opts","format","auxiliaryCommentBefore","auxiliaryCommentAfter","shouldPrintComment","retainLines","retainFunctionParens","comments","compact","minified","concise","indent","adjustMultilineComment","style","jsescOption","Object","assign","quotes","wrap","minimal","topicToken","importAttributesKeyword","_opts$recordAndTupleS","decoratorsBeforeExport","json","jsonCompatibleStrings","recordAndTupleSyntaxType","value","includes","length","console","error","filename","undefined","exports","CodeGenerator","constructor","ast","_ast","_format","_map","sourceMaps","SourceMap","generate","printer","Printer","map"],"sources":["../src/index.ts"],"sourcesContent":["import SourceMap from \"./source-map.ts\";\nimport Printer from \"./printer.ts\";\nimport type * as t from \"@babel/types\";\nimport type { Opts as jsescOptions } from \"jsesc\";\nimport type { Format } from \"./printer.ts\";\nimport type {\n EncodedSourceMap,\n DecodedSourceMap,\n Mapping,\n} from \"@jridgewell/gen-mapping\";\n\n/**\n * Normalize generator options, setting defaults.\n *\n * - Detects code indentation.\n * - If `opts.compact = \"auto\"` and the code is over 500KB, `compact` will be set to `true`.\n */\n\nfunction normalizeOptions(\n code: string | { [filename: string]: string },\n opts: GeneratorOptions,\n): Format {\n const format: Format = {\n auxiliaryCommentBefore: opts.auxiliaryCommentBefore,\n auxiliaryCommentAfter: opts.auxiliaryCommentAfter,\n shouldPrintComment: opts.shouldPrintComment,\n retainLines: opts.retainLines,\n retainFunctionParens: opts.retainFunctionParens,\n comments: opts.comments == null || opts.comments,\n compact: opts.compact,\n minified: opts.minified,\n concise: opts.concise,\n indent: {\n adjustMultilineComment: true,\n style: \" \",\n },\n jsescOption: {\n quotes: \"double\",\n wrap: true,\n minimal: process.env.BABEL_8_BREAKING ? true : false,\n ...opts.jsescOption,\n },\n topicToken: opts.topicToken,\n importAttributesKeyword: opts.importAttributesKeyword,\n };\n\n if (!process.env.BABEL_8_BREAKING) {\n format.decoratorsBeforeExport = opts.decoratorsBeforeExport;\n format.jsescOption.json = opts.jsonCompatibleStrings;\n format.recordAndTupleSyntaxType = opts.recordAndTupleSyntaxType ?? \"hash\";\n }\n\n if (format.minified) {\n format.compact = true;\n\n format.shouldPrintComment =\n format.shouldPrintComment || (() => format.comments);\n } else {\n format.shouldPrintComment =\n format.shouldPrintComment ||\n (value =>\n format.comments ||\n value.includes(\"@license\") ||\n value.includes(\"@preserve\"));\n }\n\n if (format.compact === \"auto\") {\n format.compact = typeof code === \"string\" && code.length > 500_000; // 500KB\n\n if (format.compact) {\n console.error(\n \"[BABEL] Note: The code generator has deoptimised the styling of \" +\n `${opts.filename} as it exceeds the max of ${\"500KB\"}.`,\n );\n }\n }\n\n if (format.compact) {\n format.indent.adjustMultilineComment = false;\n }\n\n const { auxiliaryCommentBefore, auxiliaryCommentAfter, shouldPrintComment } =\n format;\n\n if (auxiliaryCommentBefore && !shouldPrintComment(auxiliaryCommentBefore)) {\n format.auxiliaryCommentBefore = undefined;\n }\n if (auxiliaryCommentAfter && !shouldPrintComment(auxiliaryCommentAfter)) {\n format.auxiliaryCommentAfter = undefined;\n }\n\n return format;\n}\n\nexport interface GeneratorOptions {\n /**\n * Optional string to add as a block comment at the start of the output file.\n */\n auxiliaryCommentBefore?: string;\n\n /**\n * Optional string to add as a block comment at the end of the output file.\n */\n auxiliaryCommentAfter?: string;\n\n /**\n * Function that takes a comment (as a string) and returns true if the comment should be included in the output.\n * By default, comments are included if `opts.comments` is `true` or if `opts.minified` is `false` and the comment\n * contains `@preserve` or `@license`.\n */\n shouldPrintComment?(comment: string): boolean;\n\n /**\n * Attempt to use the same line numbers in the output code as in the source code (helps preserve stack traces).\n * Defaults to `false`.\n */\n retainLines?: boolean;\n\n /**\n * Retain parens around function expressions (could be used to change engine parsing behavior)\n * Defaults to `false`.\n */\n retainFunctionParens?: boolean;\n\n /**\n * Should comments be included in output? Defaults to `true`.\n */\n comments?: boolean;\n\n /**\n * Set to true to avoid adding whitespace for formatting. Defaults to the value of `opts.minified`.\n */\n compact?: boolean | \"auto\";\n\n /**\n * Should the output be minified. Defaults to `false`.\n */\n minified?: boolean;\n\n /**\n * Set to true to reduce whitespace (but not as much as opts.compact). Defaults to `false`.\n */\n concise?: boolean;\n\n /**\n * Used in warning messages\n */\n filename?: string;\n\n /**\n * Enable generating source maps. Defaults to `false`.\n */\n sourceMaps?: boolean;\n\n inputSourceMap?: any;\n\n /**\n * A root for all relative URLs in the source map.\n */\n sourceRoot?: string;\n\n /**\n * The filename for the source code (i.e. the code in the `code` argument).\n * This will only be used if `code` is a string.\n */\n sourceFileName?: string;\n\n /**\n * Set to true to run jsesc with \"json\": true to print \"\\u00A9\" vs. \"©\";\n * @deprecated use `jsescOptions: { json: true }` instead\n */\n jsonCompatibleStrings?: boolean;\n\n /**\n * Set to true to enable support for experimental decorators syntax before\n * module exports. If not specified, decorators will be printed in the same\n * position as they were in the input source code.\n * @deprecated Removed in Babel 8\n */\n decoratorsBeforeExport?: boolean;\n\n /**\n * Options for outputting jsesc representation.\n */\n jsescOption?: jsescOptions;\n\n /**\n * For use with the recordAndTuple token.\n * @deprecated It will be removed in Babel 8.\n */\n recordAndTupleSyntaxType?: \"bar\" | \"hash\";\n\n /**\n * For use with the Hack-style pipe operator.\n * Changes what token is used for pipe bodies’ topic references.\n */\n topicToken?: \"%\" | \"#\" | \"@@\" | \"^^\" | \"^\";\n\n /**\n * The import attributes syntax style:\n * - \"with\" : `import { a } from \"b\" with { type: \"json\" };`\n * - \"assert\" : `import { a } from \"b\" assert { type: \"json\" };`\n * - \"with-legacy\" : `import { a } from \"b\" with type: \"json\";`\n */\n importAttributesKeyword?: \"with\" | \"assert\" | \"with-legacy\";\n}\n\nexport interface GeneratorResult {\n code: string;\n map: EncodedSourceMap | null;\n decodedMap: DecodedSourceMap | undefined;\n rawMappings: Mapping[] | undefined;\n}\n\nif (!process.env.BABEL_8_BREAKING && !USE_ESM) {\n /**\n * We originally exported the Generator class above, but to make it extra clear that it is a private API,\n * we have moved that to an internal class instance and simplified the interface to the two public methods\n * that we wish to support.\n */\n\n // eslint-disable-next-line no-restricted-globals\n exports.CodeGenerator = class CodeGenerator {\n private _ast: t.Node;\n private _format: Format | undefined;\n private _map: SourceMap | null;\n constructor(ast: t.Node, opts: GeneratorOptions = {}, code?: string) {\n this._ast = ast;\n this._format = normalizeOptions(code, opts);\n this._map = opts.sourceMaps ? 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