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- let source, pos, end;
- let openTokenDepth,
- templateDepth,
- lastTokenPos,
- lastSlashWasDivision,
- templateStack,
- templateStackDepth,
- openTokenPosStack,
- openClassPosStack,
- nextBraceIsClass,
- starExportMap,
- lastStarExportSpecifier,
- _exports,
- unsafeGetters,
- reexports;
- function resetState () {
- openTokenDepth = 0;
- templateDepth = -1;
- lastTokenPos = -1;
- lastSlashWasDivision = false;
- templateStack = new Array(1024);
- templateStackDepth = 0;
- openTokenPosStack = new Array(1024);
- openClassPosStack = new Array(1024);
- nextBraceIsClass = false;
- starExportMap = Object.create(null);
- lastStarExportSpecifier = null;
- _exports = new Set();
- unsafeGetters = new Set();
- reexports = new Set();
- }
- const Import = 0;
- const ExportAssign = 1;
- const ExportStar = 2;
- function parseCJS (source, name = '@') {
- resetState();
- try {
- parseSource(source);
- }
- catch (e) {
- e.message += `\n at ${name}:${source.slice(0, pos).split('\n').length}:${pos - source.lastIndexOf('\n', pos - 1)}`;
- e.loc = pos;
- throw e;
- }
- const result = { exports: [..._exports].filter(expt => expt !== undefined && !unsafeGetters.has(expt)), reexports: [...reexports].filter(reexpt => reexpt !== undefined) };
- resetState();
- return result;
- }
- function decode (str) {
- if (str[0] === '"' || str[0] === '\'') {
- try {
- const decoded = (0, eval)(str);
-
- for (let i = 0; i < decoded.length; i++) {
- const surrogatePrefix = decoded.charCodeAt(i) & 0xFC00;
- if (surrogatePrefix < 0xD800) {
-
- continue;
- }
- else if (surrogatePrefix === 0xD800) {
-
- if ((decoded.charCodeAt(++i) & 0xFC00) !== 0xDC00)
- return;
- }
- else {
-
- return;
- }
- }
- return decoded;
- }
- catch {}
- }
- else {
- return str;
- }
- }
- function parseSource (cjsSource) {
- source = cjsSource;
- pos = -1;
- end = source.length - 1;
- let ch = 0;
-
- if (source.charCodeAt(0) === 35 && source.charCodeAt(1) === 33) {
- if (source.length === 2)
- return true;
- pos += 2;
- while (pos++ < end) {
- ch = source.charCodeAt(pos);
- if (ch === 10/*\n*/ || ch === 13/*\r*/)
- break;
- }
- }
- while (pos++ < end) {
- ch = source.charCodeAt(pos);
- if (ch === 32 || ch < 14 && ch > 8)
- continue;
- if (openTokenDepth === 0) {
- switch (ch) {
- case 105/*i*/:
- if (source.startsWith('mport', pos + 1) && keywordStart(pos))
- throwIfImportStatement();
- lastTokenPos = pos;
- continue;
- case 114/*r*/:
- const startPos = pos;
- if (tryParseRequire(Import) && keywordStart(startPos))
- tryBacktrackAddStarExportBinding(startPos - 1);
- lastTokenPos = pos;
- continue;
- case 95/*_*/:
- if (source.startsWith('interopRequireWildcard', pos + 1) && (keywordStart(pos) || source.charCodeAt(pos - 1) === 46/*.*/)) {
- const startPos = pos;
- pos += 23;
- if (source.charCodeAt(pos) === 40/*(*/) {
- pos++;
- openTokenPosStack[openTokenDepth++] = lastTokenPos;
- if (tryParseRequire(Import) && keywordStart(startPos)) {
- tryBacktrackAddStarExportBinding(startPos - 1);
- }
- }
- }
- else if (source.startsWith('_export', pos + 1) && (keywordStart(pos) || source.charCodeAt(pos - 1) === 46/*.*/)) {
- pos += 8;
- if (source.startsWith('Star', pos))
- pos += 4;
- if (source.charCodeAt(pos) === 40/*(*/) {
- openTokenPosStack[openTokenDepth++] = lastTokenPos;
- if (source.charCodeAt(++pos) === 114/*r*/)
- tryParseRequire(ExportStar);
- }
- }
- lastTokenPos = pos;
- continue;
- }
- }
- switch (ch) {
- case 101/*e*/:
- if (source.startsWith('xport', pos + 1) && keywordStart(pos)) {
- if (source.charCodeAt(pos + 6) === 115/*s*/)
- tryParseExportsDotAssign(false);
- else if (openTokenDepth === 0)
- throwIfExportStatement();
- }
- break;
- case 99/*c*/:
- if (keywordStart(pos) && source.startsWith('lass', pos + 1) && isBrOrWs(source.charCodeAt(pos + 5)))
- nextBraceIsClass = true;
- break;
- case 109/*m*/:
- if (source.startsWith('odule', pos + 1) && keywordStart(pos))
- tryParseModuleExportsDotAssign();
- break;
- case 79/*O*/:
- if (source.startsWith('bject', pos + 1) && keywordStart(pos))
- tryParseObjectDefineOrKeys(openTokenDepth === 0);
- break;
- case 40/*(*/:
- openTokenPosStack[openTokenDepth++] = lastTokenPos;
- break;
- case 41/*)*/:
- if (openTokenDepth === 0)
- throw new Error('Unexpected closing bracket.');
- openTokenDepth--;
- break;
- case 123/*{*/:
- openClassPosStack[openTokenDepth] = nextBraceIsClass;
- nextBraceIsClass = false;
- openTokenPosStack[openTokenDepth++] = lastTokenPos;
- break;
- case 125/*}*/:
- if (openTokenDepth === 0)
- throw new Error('Unexpected closing brace.');
- if (openTokenDepth-- === templateDepth) {
- templateDepth = templateStack[--templateStackDepth];
- templateString();
- }
- else {
- if (templateDepth !== -1 && openTokenDepth < templateDepth)
- throw new Error('Unexpected closing brace.');
- }
- break;
- case 60/*>*/:
- // TODO:
|