%PDF-
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Mini Shell
Mini Shell
import { tokTypes, SourceLocation, Node, lineBreak, isNewLine, Parser, Token, getLineInfo, lineBreakG, tokContexts, defaultOptions } from 'acorn';
var dummyValue = "✖";
function isDummy(node) { return node.name === dummyValue }
function noop() {}
var LooseParser = function LooseParser(input, options) {
if ( options === void 0 ) options = {};
this.toks = this.constructor.BaseParser.tokenizer(input, options);
this.options = this.toks.options;
this.input = this.toks.input;
this.tok = this.last = {type: tokTypes.eof, start: 0, end: 0};
this.tok.validateRegExpFlags = noop;
this.tok.validateRegExpPattern = noop;
if (this.options.locations) {
var here = this.toks.curPosition();
this.tok.loc = new SourceLocation(this.toks, here, here);
}
this.ahead = []; // Tokens ahead
this.context = []; // Indentation contexted
this.curIndent = 0;
this.curLineStart = 0;
this.nextLineStart = this.lineEnd(this.curLineStart) + 1;
this.inAsync = false;
this.inGenerator = false;
this.inFunction = false;
};
LooseParser.prototype.startNode = function startNode () {
return new Node(this.toks, this.tok.start, this.options.locations ? this.tok.loc.start : null)
};
LooseParser.prototype.storeCurrentPos = function storeCurrentPos () {
return this.options.locations ? [this.tok.start, this.tok.loc.start] : this.tok.start
};
LooseParser.prototype.startNodeAt = function startNodeAt (pos) {
if (this.options.locations) {
return new Node(this.toks, pos[0], pos[1])
} else {
return new Node(this.toks, pos)
}
};
LooseParser.prototype.finishNode = function finishNode (node, type) {
node.type = type;
node.end = this.last.end;
if (this.options.locations)
{ node.loc.end = this.last.loc.end; }
if (this.options.ranges)
{ node.range[1] = this.last.end; }
return node
};
LooseParser.prototype.dummyNode = function dummyNode (type) {
var dummy = this.startNode();
dummy.type = type;
dummy.end = dummy.start;
if (this.options.locations)
{ dummy.loc.end = dummy.loc.start; }
if (this.options.ranges)
{ dummy.range[1] = dummy.start; }
this.last = {type: tokTypes.name, start: dummy.start, end: dummy.start, loc: dummy.loc};
return dummy
};
LooseParser.prototype.dummyIdent = function dummyIdent () {
var dummy = this.dummyNode("Identifier");
dummy.name = dummyValue;
return dummy
};
LooseParser.prototype.dummyString = function dummyString () {
var dummy = this.dummyNode("Literal");
dummy.value = dummy.raw = dummyValue;
return dummy
};
LooseParser.prototype.eat = function eat (type) {
if (this.tok.type === type) {
this.next();
return true
} else {
return false
}
};
LooseParser.prototype.isContextual = function isContextual (name) {
return this.tok.type === tokTypes.name && this.tok.value === name
};
LooseParser.prototype.eatContextual = function eatContextual (name) {
return this.tok.value === name && this.eat(tokTypes.name)
};
LooseParser.prototype.canInsertSemicolon = function canInsertSemicolon () {
return this.tok.type === tokTypes.eof || this.tok.type === tokTypes.braceR ||
lineBreak.test(this.input.slice(this.last.end, this.tok.start))
};
LooseParser.prototype.semicolon = function semicolon () {
return this.eat(tokTypes.semi)
};
LooseParser.prototype.expect = function expect (type) {
if (this.eat(type)) { return true }
for (var i = 1; i <= 2; i++) {
if (this.lookAhead(i).type === type) {
for (var j = 0; j < i; j++) { this.next(); }
return true
}
}
};
LooseParser.prototype.pushCx = function pushCx () {
this.context.push(this.curIndent);
};
LooseParser.prototype.popCx = function popCx () {
this.curIndent = this.context.pop();
};
LooseParser.prototype.lineEnd = function lineEnd (pos) {
while (pos < this.input.length && !isNewLine(this.input.charCodeAt(pos))) { ++pos; }
return pos
};
LooseParser.prototype.indentationAfter = function indentationAfter (pos) {
for (var count = 0;; ++pos) {
var ch = this.input.charCodeAt(pos);
if (ch === 32) { ++count; }
else if (ch === 9) { count += this.options.tabSize; }
else { return count }
}
};
LooseParser.prototype.closes = function closes (closeTok, indent, line, blockHeuristic) {
if (this.tok.type === closeTok || this.tok.type === tokTypes.eof) { return true }
return line !== this.curLineStart && this.curIndent < indent && this.tokenStartsLine() &&
(!blockHeuristic || this.nextLineStart >= this.input.length ||
this.indentationAfter(this.nextLineStart) < indent)
};
LooseParser.prototype.tokenStartsLine = function tokenStartsLine () {
for (var p = this.tok.start - 1; p >= this.curLineStart; --p) {
var ch = this.input.charCodeAt(p);
if (ch !== 9 && ch !== 32) { return false }
}
return true
};
LooseParser.prototype.extend = function extend (name, f) {
this[name] = f(this[name]);
};
LooseParser.prototype.parse = function parse () {
this.next();
return this.parseTopLevel()
};
LooseParser.extend = function extend () {
var plugins = [], len = arguments.length;
while ( len-- ) plugins[ len ] = arguments[ len ];
var cls = this;
for (var i = 0; i < plugins.length; i++) { cls = plugins[i](cls); }
return cls
};
LooseParser.parse = function parse (input, options) {
return new this(input, options).parse()
};
// Allows plugins to extend the base parser / tokenizer used
LooseParser.BaseParser = Parser;
var lp$2 = LooseParser.prototype;
function isSpace(ch) {
return (ch < 14 && ch > 8) || ch === 32 || ch === 160 || isNewLine(ch)
}
lp$2.next = function() {
this.last = this.tok;
if (this.ahead.length)
{ this.tok = this.ahead.shift(); }
else
{ this.tok = this.readToken(); }
if (this.tok.start >= this.nextLineStart) {
while (this.tok.start >= this.nextLineStart) {
this.curLineStart = this.nextLineStart;
this.nextLineStart = this.lineEnd(this.curLineStart) + 1;
}
this.curIndent = this.indentationAfter(this.curLineStart);
}
};
lp$2.readToken = function() {
for (;;) {
try {
this.toks.next();
if (this.toks.type === tokTypes.dot &&
this.input.substr(this.toks.end, 1) === "." &&
this.options.ecmaVersion >= 6) {
this.toks.end++;
this.toks.type = tokTypes.ellipsis;
}
return new Token(this.toks)
} catch (e) {
if (!(e instanceof SyntaxError)) { throw e }
// Try to skip some text, based on the error message, and then continue
var msg = e.message, pos = e.raisedAt, replace = true;
if (/unterminated/i.test(msg)) {
pos = this.lineEnd(e.pos + 1);
if (/string/.test(msg)) {
replace = {start: e.pos, end: pos, type: tokTypes.string, value: this.input.slice(e.pos + 1, pos)};
} else if (/regular expr/i.test(msg)) {
var re = this.input.slice(e.pos, pos);
try { re = new RegExp(re); } catch (e$1) { /* ignore compilation error due to new syntax */ }
replace = {start: e.pos, end: pos, type: tokTypes.regexp, value: re};
} else if (/template/.test(msg)) {
replace = {
start: e.pos,
end: pos,
type: tokTypes.template,
value: this.input.slice(e.pos, pos)
};
} else {
replace = false;
}
} else if (/invalid (unicode|regexp|number)|expecting unicode|octal literal|is reserved|directly after number|expected number in radix/i.test(msg)) {
while (pos < this.input.length && !isSpace(this.input.charCodeAt(pos))) { ++pos; }
} else if (/character escape|expected hexadecimal/i.test(msg)) {
while (pos < this.input.length) {
var ch = this.input.charCodeAt(pos++);
if (ch === 34 || ch === 39 || isNewLine(ch)) { break }
}
} else if (/unexpected character/i.test(msg)) {
pos++;
replace = false;
} else if (/regular expression/i.test(msg)) {
replace = true;
} else {
throw e
}
this.resetTo(pos);
if (replace === true) { replace = {start: pos, end: pos, type: tokTypes.name, value: dummyValue}; }
if (replace) {
if (this.options.locations)
{ replace.loc = new SourceLocation(
this.toks,
getLineInfo(this.input, replace.start),
getLineInfo(this.input, replace.end)); }
return replace
}
}
}
};
lp$2.resetTo = function(pos) {
this.toks.pos = pos;
this.toks.containsEsc = false;
var ch = this.input.charAt(pos - 1);
this.toks.exprAllowed = !ch || /[[{(,;:?/*=+\-~!|&%^<>]/.test(ch) ||
/[enwfd]/.test(ch) &&
/\b(case|else|return|throw|new|in|(instance|type)?of|delete|void)$/.test(this.input.slice(pos - 10, pos));
if (this.options.locations) {
this.toks.curLine = 1;
this.toks.lineStart = lineBreakG.lastIndex = 0;
var match;
while ((match = lineBreakG.exec(this.input)) && match.index < pos) {
++this.toks.curLine;
this.toks.lineStart = match.index + match[0].length;
}
}
};
lp$2.lookAhead = function(n) {
while (n > this.ahead.length)
{ this.ahead.push(this.readToken()); }
return this.ahead[n - 1]
};
var lp$1 = LooseParser.prototype;
lp$1.parseTopLevel = function() {
var node = this.startNodeAt(this.options.locations ? [0, getLineInfo(this.input, 0)] : 0);
node.body = [];
while (this.tok.type !== tokTypes.eof) { node.body.push(this.parseStatement()); }
this.toks.adaptDirectivePrologue(node.body);
this.last = this.tok;
node.sourceType = this.options.sourceType;
return this.finishNode(node, "Program")
};
lp$1.parseStatement = function() {
var starttype = this.tok.type, node = this.startNode(), kind;
if (this.toks.isLet()) {
starttype = tokTypes._var;
kind = "let";
}
switch (starttype) {
case tokTypes._break: case tokTypes._continue:
this.next();
var isBreak = starttype === tokTypes._break;
if (this.semicolon() || this.canInsertSemicolon()) {
node.label = null;
} else {
node.label = this.tok.type === tokTypes.name ? this.parseIdent() : null;
this.semicolon();
}
return this.finishNode(node, isBreak ? "BreakStatement" : "ContinueStatement")
case tokTypes._debugger:
this.next();
this.semicolon();
return this.finishNode(node, "DebuggerStatement")
case tokTypes._do:
this.next();
node.body = this.parseStatement();
node.test = this.eat(tokTypes._while) ? this.parseParenExpression() : this.dummyIdent();
this.semicolon();
return this.finishNode(node, "DoWhileStatement")
case tokTypes._for:
this.next(); // `for` keyword
var isAwait = this.options.ecmaVersion >= 9 && this.eatContextual("await");
this.pushCx();
this.expect(tokTypes.parenL);
if (this.tok.type === tokTypes.semi) { return this.parseFor(node, null) }
var isLet = this.toks.isLet();
if (isLet || this.tok.type === tokTypes._var || this.tok.type === tokTypes._const) {
var init$1 = this.parseVar(this.startNode(), true, isLet ? "let" : this.tok.value);
if (init$1.declarations.length === 1 && (this.tok.type === tokTypes._in || this.isContextual("of"))) {
if (this.options.ecmaVersion >= 9 && this.tok.type !== tokTypes._in) {
node.await = isAwait;
}
return this.parseForIn(node, init$1)
}
return this.parseFor(node, init$1)
}
var init = this.parseExpression(true);
if (this.tok.type === tokTypes._in || this.isContextual("of")) {
if (this.options.ecmaVersion >= 9 && this.tok.type !== tokTypes._in) {
node.await = isAwait;
}
return this.parseForIn(node, this.toAssignable(init))
}
return this.parseFor(node, init)
case tokTypes._function:
this.next();
return this.parseFunction(node, true)
case tokTypes._if:
this.next();
node.test = this.parseParenExpression();
node.consequent = this.parseStatement();
node.alternate = this.eat(tokTypes._else) ? this.parseStatement() : null;
return this.finishNode(node, "IfStatement")
case tokTypes._return:
this.next();
if (this.eat(tokTypes.semi) || this.canInsertSemicolon()) { node.argument = null; }
else { node.argument = this.parseExpression(); this.semicolon(); }
return this.finishNode(node, "ReturnStatement")
case tokTypes._switch:
var blockIndent = this.curIndent, line = this.curLineStart;
this.next();
node.discriminant = this.parseParenExpression();
node.cases = [];
this.pushCx();
this.expect(tokTypes.braceL);
var cur;
while (!this.closes(tokTypes.braceR, blockIndent, line, true)) {
if (this.tok.type === tokTypes._case || this.tok.type === tokTypes._default) {
var isCase = this.tok.type === tokTypes._case;
if (cur) { this.finishNode(cur, "SwitchCase"); }
node.cases.push(cur = this.startNode());
cur.consequent = [];
this.next();
if (isCase) { cur.test = this.parseExpression(); }
else { cur.test = null; }
this.expect(tokTypes.colon);
} else {
if (!cur) {
node.cases.push(cur = this.startNode());
cur.consequent = [];
cur.test = null;
}
cur.consequent.push(this.parseStatement());
}
}
if (cur) { this.finishNode(cur, "SwitchCase"); }
this.popCx();
this.eat(tokTypes.braceR);
return this.finishNode(node, "SwitchStatement")
case tokTypes._throw:
this.next();
node.argument = this.parseExpression();
this.semicolon();
return this.finishNode(node, "ThrowStatement")
case tokTypes._try:
this.next();
node.block = this.parseBlock();
node.handler = null;
if (this.tok.type === tokTypes._catch) {
var clause = this.startNode();
this.next();
if (this.eat(tokTypes.parenL)) {
clause.param = this.toAssignable(this.parseExprAtom(), true);
this.expect(tokTypes.parenR);
} else {
clause.param = null;
}
clause.body = this.parseBlock();
node.handler = this.finishNode(clause, "CatchClause");
}
node.finalizer = this.eat(tokTypes._finally) ? this.parseBlock() : null;
if (!node.handler && !node.finalizer) { return node.block }
return this.finishNode(node, "TryStatement")
case tokTypes._var:
case tokTypes._const:
return this.parseVar(node, false, kind || this.tok.value)
case tokTypes._while:
this.next();
node.test = this.parseParenExpression();
node.body = this.parseStatement();
return this.finishNode(node, "WhileStatement")
case tokTypes._with:
this.next();
node.object = this.parseParenExpression();
node.body = this.parseStatement();
return this.finishNode(node, "WithStatement")
case tokTypes.braceL:
return this.parseBlock()
case tokTypes.semi:
this.next();
return this.finishNode(node, "EmptyStatement")
case tokTypes._class:
return this.parseClass(true)
case tokTypes._import:
if (this.options.ecmaVersion > 10) {
var nextType = this.lookAhead(1).type;
if (nextType === tokTypes.parenL || nextType === tokTypes.dot) {
node.expression = this.parseExpression();
this.semicolon();
return this.finishNode(node, "ExpressionStatement")
}
}
return this.parseImport()
case tokTypes._export:
return this.parseExport()
default:
if (this.toks.isAsyncFunction()) {
this.next();
this.next();
return this.parseFunction(node, true, true)
}
var expr = this.parseExpression();
if (isDummy(expr)) {
this.next();
if (this.tok.type === tokTypes.eof) { return this.finishNode(node, "EmptyStatement") }
return this.parseStatement()
} else if (starttype === tokTypes.name && expr.type === "Identifier" && this.eat(tokTypes.colon)) {
node.body = this.parseStatement();
node.label = expr;
return this.finishNode(node, "LabeledStatement")
} else {
node.expression = expr;
this.semicolon();
return this.finishNode(node, "ExpressionStatement")
}
}
};
lp$1.parseBlock = function() {
var node = this.startNode();
this.pushCx();
this.expect(tokTypes.braceL);
var blockIndent = this.curIndent, line = this.curLineStart;
node.body = [];
while (!this.closes(tokTypes.braceR, blockIndent, line, true))
{ node.body.push(this.parseStatement()); }
this.popCx();
this.eat(tokTypes.braceR);
return this.finishNode(node, "BlockStatement")
};
lp$1.parseFor = function(node, init) {
node.init = init;
node.test = node.update = null;
if (this.eat(tokTypes.semi) && this.tok.type !== tokTypes.semi) { node.test = this.parseExpression(); }
if (this.eat(tokTypes.semi) && this.tok.type !== tokTypes.parenR) { node.update = this.parseExpression(); }
this.popCx();
this.expect(tokTypes.parenR);
node.body = this.parseStatement();
return this.finishNode(node, "ForStatement")
};
lp$1.parseForIn = function(node, init) {
var type = this.tok.type === tokTypes._in ? "ForInStatement" : "ForOfStatement";
this.next();
node.left = init;
node.right = this.parseExpression();
this.popCx();
this.expect(tokTypes.parenR);
node.body = this.parseStatement();
return this.finishNode(node, type)
};
lp$1.parseVar = function(node, noIn, kind) {
node.kind = kind;
this.next();
node.declarations = [];
do {
var decl = this.startNode();
decl.id = this.options.ecmaVersion >= 6 ? this.toAssignable(this.parseExprAtom(), true) : this.parseIdent();
decl.init = this.eat(tokTypes.eq) ? this.parseMaybeAssign(noIn) : null;
node.declarations.push(this.finishNode(decl, "VariableDeclarator"));
} while (this.eat(tokTypes.comma))
if (!node.declarations.length) {
var decl$1 = this.startNode();
decl$1.id = this.dummyIdent();
node.declarations.push(this.finishNode(decl$1, "VariableDeclarator"));
}
if (!noIn) { this.semicolon(); }
return this.finishNode(node, "VariableDeclaration")
};
lp$1.parseClass = function(isStatement) {
var node = this.startNode();
this.next();
if (this.tok.type === tokTypes.name) { node.id = this.parseIdent(); }
else if (isStatement === true) { node.id = this.dummyIdent(); }
else { node.id = null; }
node.superClass = this.eat(tokTypes._extends) ? this.parseExpression() : null;
node.body = this.startNode();
node.body.body = [];
this.pushCx();
var indent = this.curIndent + 1, line = this.curLineStart;
this.eat(tokTypes.braceL);
if (this.curIndent + 1 < indent) { indent = this.curIndent; line = this.curLineStart; }
while (!this.closes(tokTypes.braceR, indent, line)) {
var element = this.parseClassElement();
if (element) { node.body.body.push(element); }
}
this.popCx();
if (!this.eat(tokTypes.braceR)) {
// If there is no closing brace, make the node span to the start
// of the next token (this is useful for Tern)
this.last.end = this.tok.start;
if (this.options.locations) { this.last.loc.end = this.tok.loc.start; }
}
this.semicolon();
this.finishNode(node.body, "ClassBody");
return this.finishNode(node, isStatement ? "ClassDeclaration" : "ClassExpression")
};
lp$1.parseClassElement = function() {
if (this.eat(tokTypes.semi)) { return null }
var ref = this.options;
var ecmaVersion = ref.ecmaVersion;
var locations = ref.locations;
var indent = this.curIndent;
var line = this.curLineStart;
var node = this.startNode();
var keyName = "";
var isGenerator = false;
var isAsync = false;
var kind = "method";
var isStatic = false;
if (this.eatContextual("static")) {
// Parse static init block
if (ecmaVersion >= 13 && this.eat(tokTypes.braceL)) {
this.parseClassStaticBlock(node);
return node
}
if (this.isClassElementNameStart() || this.toks.type === tokTypes.star) {
isStatic = true;
} else {
keyName = "static";
}
}
node.static = isStatic;
if (!keyName && ecmaVersion >= 8 && this.eatContextual("async")) {
if ((this.isClassElementNameStart() || this.toks.type === tokTypes.star) && !this.canInsertSemicolon()) {
isAsync = true;
} else {
keyName = "async";
}
}
if (!keyName) {
isGenerator = this.eat(tokTypes.star);
var lastValue = this.toks.value;
if (this.eatContextual("get") || this.eatContextual("set")) {
if (this.isClassElementNameStart()) {
kind = lastValue;
} else {
keyName = lastValue;
}
}
}
// Parse element name
if (keyName) {
// 'async', 'get', 'set', or 'static' were not a keyword contextually.
// The last token is any of those. Make it the element name.
node.computed = false;
node.key = this.startNodeAt(locations ? [this.toks.lastTokStart, this.toks.lastTokStartLoc] : this.toks.lastTokStart);
node.key.name = keyName;
this.finishNode(node.key, "Identifier");
} else {
this.parseClassElementName(node);
// From https://github.com/acornjs/acorn/blob/7deba41118d6384a2c498c61176b3cf434f69590/acorn-loose/src/statement.js#L291
// Skip broken stuff.
if (isDummy(node.key)) {
if (isDummy(this.parseMaybeAssign())) { this.next(); }
this.eat(tokTypes.comma);
return null
}
}
// Parse element value
if (ecmaVersion < 13 || this.toks.type === tokTypes.parenL || kind !== "method" || isGenerator || isAsync) {
// Method
var isConstructor =
!node.computed &&
!node.static &&
!isGenerator &&
!isAsync &&
kind === "method" && (
node.key.type === "Identifier" && node.key.name === "constructor" ||
node.key.type === "Literal" && node.key.value === "constructor"
);
node.kind = isConstructor ? "constructor" : kind;
node.value = this.parseMethod(isGenerator, isAsync);
this.finishNode(node, "MethodDefinition");
} else {
// Field
if (this.eat(tokTypes.eq)) {
if (this.curLineStart !== line && this.curIndent <= indent && this.tokenStartsLine()) {
// Estimated the next line is the next class element by indentations.
node.value = null;
} else {
var oldInAsync = this.inAsync;
var oldInGenerator = this.inGenerator;
this.inAsync = false;
this.inGenerator = false;
node.value = this.parseMaybeAssign();
this.inAsync = oldInAsync;
this.inGenerator = oldInGenerator;
}
} else {
node.value = null;
}
this.semicolon();
this.finishNode(node, "PropertyDefinition");
}
return node
};
lp$1.parseClassStaticBlock = function(node) {
var blockIndent = this.curIndent, line = this.curLineStart;
node.body = [];
this.pushCx();
while (!this.closes(tokTypes.braceR, blockIndent, line, true))
{ node.body.push(this.parseStatement()); }
this.popCx();
this.eat(tokTypes.braceR);
return this.finishNode(node, "StaticBlock")
};
lp$1.isClassElementNameStart = function() {
return this.toks.isClassElementNameStart()
};
lp$1.parseClassElementName = function(element) {
if (this.toks.type === tokTypes.privateId) {
element.computed = false;
element.key = this.parsePrivateIdent();
} else {
this.parsePropertyName(element);
}
};
lp$1.parseFunction = function(node, isStatement, isAsync) {
var oldInAsync = this.inAsync, oldInGenerator = this.inGenerator, oldInFunction = this.inFunction;
this.initFunction(node);
if (this.options.ecmaVersion >= 6) {
node.generator = this.eat(tokTypes.star);
}
if (this.options.ecmaVersion >= 8) {
node.async = !!isAsync;
}
if (this.tok.type === tokTypes.name) { node.id = this.parseIdent(); }
else if (isStatement === true) { node.id = this.dummyIdent(); }
this.inAsync = node.async;
this.inGenerator = node.generator;
this.inFunction = true;
node.params = this.parseFunctionParams();
node.body = this.parseBlock();
this.toks.adaptDirectivePrologue(node.body.body);
this.inAsync = oldInAsync;
this.inGenerator = oldInGenerator;
this.inFunction = oldInFunction;
return this.finishNode(node, isStatement ? "FunctionDeclaration" : "FunctionExpression")
};
lp$1.parseExport = function() {
var node = this.startNode();
this.next();
if (this.eat(tokTypes.star)) {
if (this.options.ecmaVersion >= 11) {
if (this.eatContextual("as")) {
node.exported = this.parseExprAtom();
} else {
node.exported = null;
}
}
node.source = this.eatContextual("from") ? this.parseExprAtom() : this.dummyString();
this.semicolon();
return this.finishNode(node, "ExportAllDeclaration")
}
if (this.eat(tokTypes._default)) {
// export default (function foo() {}) // This is FunctionExpression.
var isAsync;
if (this.tok.type === tokTypes._function || (isAsync = this.toks.isAsyncFunction())) {
var fNode = this.startNode();
this.next();
if (isAsync) { this.next(); }
node.declaration = this.parseFunction(fNode, "nullableID", isAsync);
} else if (this.tok.type === tokTypes._class) {
node.declaration = this.parseClass("nullableID");
} else {
node.declaration = this.parseMaybeAssign();
this.semicolon();
}
return this.finishNode(node, "ExportDefaultDeclaration")
}
if (this.tok.type.keyword || this.toks.isLet() || this.toks.isAsyncFunction()) {
node.declaration = this.parseStatement();
node.specifiers = [];
node.source = null;
} else {
node.declaration = null;
node.specifiers = this.parseExportSpecifierList();
node.source = this.eatContextual("from") ? this.parseExprAtom() : null;
this.semicolon();
}
return this.finishNode(node, "ExportNamedDeclaration")
};
lp$1.parseImport = function() {
var node = this.startNode();
this.next();
if (this.tok.type === tokTypes.string) {
node.specifiers = [];
node.source = this.parseExprAtom();
} else {
var elt;
if (this.tok.type === tokTypes.name && this.tok.value !== "from") {
elt = this.startNode();
elt.local = this.parseIdent();
this.finishNode(elt, "ImportDefaultSpecifier");
this.eat(tokTypes.comma);
}
node.specifiers = this.parseImportSpecifiers();
node.source = this.eatContextual("from") && this.tok.type === tokTypes.string ? this.parseExprAtom() : this.dummyString();
if (elt) { node.specifiers.unshift(elt); }
}
this.semicolon();
return this.finishNode(node, "ImportDeclaration")
};
lp$1.parseImportSpecifiers = function() {
var elts = [];
if (this.tok.type === tokTypes.star) {
var elt = this.startNode();
this.next();
elt.local = this.eatContextual("as") ? this.parseIdent() : this.dummyIdent();
elts.push(this.finishNode(elt, "ImportNamespaceSpecifier"));
} else {
var indent = this.curIndent, line = this.curLineStart, continuedLine = this.nextLineStart;
this.pushCx();
this.eat(tokTypes.braceL);
if (this.curLineStart > continuedLine) { continuedLine = this.curLineStart; }
while (!this.closes(tokTypes.braceR, indent + (this.curLineStart <= continuedLine ? 1 : 0), line)) {
var elt$1 = this.startNode();
if (this.eat(tokTypes.star)) {
elt$1.local = this.eatContextual("as") ? this.parseModuleExportName() : this.dummyIdent();
this.finishNode(elt$1, "ImportNamespaceSpecifier");
} else {
if (this.isContextual("from")) { break }
elt$1.imported = this.parseModuleExportName();
if (isDummy(elt$1.imported)) { break }
elt$1.local = this.eatContextual("as") ? this.parseModuleExportName() : elt$1.imported;
this.finishNode(elt$1, "ImportSpecifier");
}
elts.push(elt$1);
this.eat(tokTypes.comma);
}
this.eat(tokTypes.braceR);
this.popCx();
}
return elts
};
lp$1.parseExportSpecifierList = function() {
var elts = [];
var indent = this.curIndent, line = this.curLineStart, continuedLine = this.nextLineStart;
this.pushCx();
this.eat(tokTypes.braceL);
if (this.curLineStart > continuedLine) { continuedLine = this.curLineStart; }
while (!this.closes(tokTypes.braceR, indent + (this.curLineStart <= continuedLine ? 1 : 0), line)) {
if (this.isContextual("from")) { break }
var elt = this.startNode();
elt.local = this.parseModuleExportName();
if (isDummy(elt.local)) { break }
elt.exported = this.eatContextual("as") ? this.parseModuleExportName() : elt.local;
this.finishNode(elt, "ExportSpecifier");
elts.push(elt);
this.eat(tokTypes.comma);
}
this.eat(tokTypes.braceR);
this.popCx();
return elts
};
lp$1.parseModuleExportName = function() {
return this.options.ecmaVersion >= 13 && this.tok.type === tokTypes.string
? this.parseExprAtom()
: this.parseIdent()
};
var lp = LooseParser.prototype;
lp.checkLVal = function(expr) {
if (!expr) { return expr }
switch (expr.type) {
case "Identifier":
case "MemberExpression":
return expr
case "ParenthesizedExpression":
expr.expression = this.checkLVal(expr.expression);
return expr
default:
return this.dummyIdent()
}
};
lp.parseExpression = function(noIn) {
var start = this.storeCurrentPos();
var expr = this.parseMaybeAssign(noIn);
if (this.tok.type === tokTypes.comma) {
var node = this.startNodeAt(start);
node.expressions = [expr];
while (this.eat(tokTypes.comma)) { node.expressions.push(this.parseMaybeAssign(noIn)); }
return this.finishNode(node, "SequenceExpression")
}
return expr
};
lp.parseParenExpression = function() {
this.pushCx();
this.expect(tokTypes.parenL);
var val = this.parseExpression();
this.popCx();
this.expect(tokTypes.parenR);
return val
};
lp.parseMaybeAssign = function(noIn) {
// `yield` should be an identifier reference if it's not in generator functions.
if (this.inGenerator && this.toks.isContextual("yield")) {
var node = this.startNode();
this.next();
if (this.semicolon() || this.canInsertSemicolon() || (this.tok.type !== tokTypes.star && !this.tok.type.startsExpr)) {
node.delegate = false;
node.argument = null;
} else {
node.delegate = this.eat(tokTypes.star);
node.argument = this.parseMaybeAssign();
}
return this.finishNode(node, "YieldExpression")
}
var start = this.storeCurrentPos();
var left = this.parseMaybeConditional(noIn);
if (this.tok.type.isAssign) {
var node$1 = this.startNodeAt(start);
node$1.operator = this.tok.value;
node$1.left = this.tok.type === tokTypes.eq ? this.toAssignable(left) : this.checkLVal(left);
this.next();
node$1.right = this.parseMaybeAssign(noIn);
return this.finishNode(node$1, "AssignmentExpression")
}
return left
};
lp.parseMaybeConditional = function(noIn) {
var start = this.storeCurrentPos();
var expr = this.parseExprOps(noIn);
if (this.eat(tokTypes.question)) {
var node = this.startNodeAt(start);
node.test = expr;
node.consequent = this.parseMaybeAssign();
node.alternate = this.expect(tokTypes.colon) ? this.parseMaybeAssign(noIn) : this.dummyIdent();
return this.finishNode(node, "ConditionalExpression")
}
return expr
};
lp.parseExprOps = function(noIn) {
var start = this.storeCurrentPos();
var indent = this.curIndent, line = this.curLineStart;
return this.parseExprOp(this.parseMaybeUnary(false), start, -1, noIn, indent, line)
};
lp.parseExprOp = function(left, start, minPrec, noIn, indent, line) {
if (this.curLineStart !== line && this.curIndent < indent && this.tokenStartsLine()) { return left }
var prec = this.tok.type.binop;
if (prec != null && (!noIn || this.tok.type !== tokTypes._in)) {
if (prec > minPrec) {
var node = this.startNodeAt(start);
node.left = left;
node.operator = this.tok.value;
this.next();
if (this.curLineStart !== line && this.curIndent < indent && this.tokenStartsLine()) {
node.right = this.dummyIdent();
} else {
var rightStart = this.storeCurrentPos();
node.right = this.parseExprOp(this.parseMaybeUnary(false), rightStart, prec, noIn, indent, line);
}
this.finishNode(node, /&&|\|\||\?\?/.test(node.operator) ? "LogicalExpression" : "BinaryExpression");
return this.parseExprOp(node, start, minPrec, noIn, indent, line)
}
}
return left
};
lp.parseMaybeUnary = function(sawUnary) {
var start = this.storeCurrentPos(), expr;
if (this.options.ecmaVersion >= 8 && this.toks.isContextual("await") &&
(this.inAsync || (this.toks.inModule && this.options.ecmaVersion >= 13) ||
(!this.inFunction && this.options.allowAwaitOutsideFunction))) {
expr = this.parseAwait();
sawUnary = true;
} else if (this.tok.type.prefix) {
var node = this.startNode(), update = this.tok.type === tokTypes.incDec;
if (!update) { sawUnary = true; }
node.operator = this.tok.value;
node.prefix = true;
this.next();
node.argument = this.parseMaybeUnary(true);
if (update) { node.argument = this.checkLVal(node.argument); }
expr = this.finishNode(node, update ? "UpdateExpression" : "UnaryExpression");
} else if (this.tok.type === tokTypes.ellipsis) {
var node$1 = this.startNode();
this.next();
node$1.argument = this.parseMaybeUnary(sawUnary);
expr = this.finishNode(node$1, "SpreadElement");
} else if (!sawUnary && this.tok.type === tokTypes.privateId) {
expr = this.parsePrivateIdent();
} else {
expr = this.parseExprSubscripts();
while (this.tok.type.postfix && !this.canInsertSemicolon()) {
var node$2 = this.startNodeAt(start);
node$2.operator = this.tok.value;
node$2.prefix = false;
node$2.argument = this.checkLVal(expr);
this.next();
expr = this.finishNode(node$2, "UpdateExpression");
}
}
if (!sawUnary && this.eat(tokTypes.starstar)) {
var node$3 = this.startNodeAt(start);
node$3.operator = "**";
node$3.left = expr;
node$3.right = this.parseMaybeUnary(false);
return this.finishNode(node$3, "BinaryExpression")
}
return expr
};
lp.parseExprSubscripts = function() {
var start = this.storeCurrentPos();
return this.parseSubscripts(this.parseExprAtom(), start, false, this.curIndent, this.curLineStart)
};
lp.parseSubscripts = function(base, start, noCalls, startIndent, line) {
var optionalSupported = this.options.ecmaVersion >= 11;
var optionalChained = false;
for (;;) {
if (this.curLineStart !== line && this.curIndent <= startIndent && this.tokenStartsLine()) {
if (this.tok.type === tokTypes.dot && this.curIndent === startIndent)
{ --startIndent; }
else
{ break }
}
var maybeAsyncArrow = base.type === "Identifier" && base.name === "async" && !this.canInsertSemicolon();
var optional = optionalSupported && this.eat(tokTypes.questionDot);
if (optional) {
optionalChained = true;
}
if ((optional && this.tok.type !== tokTypes.parenL && this.tok.type !== tokTypes.bracketL && this.tok.type !== tokTypes.backQuote) || this.eat(tokTypes.dot)) {
var node = this.startNodeAt(start);
node.object = base;
if (this.curLineStart !== line && this.curIndent <= startIndent && this.tokenStartsLine())
{ node.property = this.dummyIdent(); }
else
{ node.property = this.parsePropertyAccessor() || this.dummyIdent(); }
node.computed = false;
if (optionalSupported) {
node.optional = optional;
}
base = this.finishNode(node, "MemberExpression");
} else if (this.tok.type === tokTypes.bracketL) {
this.pushCx();
this.next();
var node$1 = this.startNodeAt(start);
node$1.object = base;
node$1.property = this.parseExpression();
node$1.computed = true;
if (optionalSupported) {
node$1.optional = optional;
}
this.popCx();
this.expect(tokTypes.bracketR);
base = this.finishNode(node$1, "MemberExpression");
} else if (!noCalls && this.tok.type === tokTypes.parenL) {
var exprList = this.parseExprList(tokTypes.parenR);
if (maybeAsyncArrow && this.eat(tokTypes.arrow))
{ return this.parseArrowExpression(this.startNodeAt(start), exprList, true) }
var node$2 = this.startNodeAt(start);
node$2.callee = base;
node$2.arguments = exprList;
if (optionalSupported) {
node$2.optional = optional;
}
base = this.finishNode(node$2, "CallExpression");
} else if (this.tok.type === tokTypes.backQuote) {
var node$3 = this.startNodeAt(start);
node$3.tag = base;
node$3.quasi = this.parseTemplate();
base = this.finishNode(node$3, "TaggedTemplateExpression");
} else {
break
}
}
if (optionalChained) {
var chainNode = this.startNodeAt(start);
chainNode.expression = base;
base = this.finishNode(chainNode, "ChainExpression");
}
return base
};
lp.parseExprAtom = function() {
var node;
switch (this.tok.type) {
case tokTypes._this:
case tokTypes._super:
var type = this.tok.type === tokTypes._this ? "ThisExpression" : "Super";
node = this.startNode();
this.next();
return this.finishNode(node, type)
case tokTypes.name:
var start = this.storeCurrentPos();
var id = this.parseIdent();
var isAsync = false;
if (id.name === "async" && !this.canInsertSemicolon()) {
if (this.eat(tokTypes._function)) {
this.toks.overrideContext(tokContexts.f_expr);
return this.parseFunction(this.startNodeAt(start), false, true)
}
if (this.tok.type === tokTypes.name) {
id = this.parseIdent();
isAsync = true;
}
}
return this.eat(tokTypes.arrow) ? this.parseArrowExpression(this.startNodeAt(start), [id], isAsync) : id
case tokTypes.regexp:
node = this.startNode();
var val = this.tok.value;
node.regex = {pattern: val.pattern, flags: val.flags};
node.value = val.value;
node.raw = this.input.slice(this.tok.start, this.tok.end);
this.next();
return this.finishNode(node, "Literal")
case tokTypes.num: case tokTypes.string:
node = this.startNode();
node.value = this.tok.value;
node.raw = this.input.slice(this.tok.start, this.tok.end);
if (this.tok.type === tokTypes.num && node.raw.charCodeAt(node.raw.length - 1) === 110) { node.bigint = node.raw.slice(0, -1).replace(/_/g, ""); }
this.next();
return this.finishNode(node, "Literal")
case tokTypes._null: case tokTypes._true: case tokTypes._false:
node = this.startNode();
node.value = this.tok.type === tokTypes._null ? null : this.tok.type === tokTypes._true;
node.raw = this.tok.type.keyword;
this.next();
return this.finishNode(node, "Literal")
case tokTypes.parenL:
var parenStart = this.storeCurrentPos();
this.next();
var inner = this.parseExpression();
this.expect(tokTypes.parenR);
if (this.eat(tokTypes.arrow)) {
// (a,)=>a // SequenceExpression makes dummy in the last hole. Drop the dummy.
var params = inner.expressions || [inner];
if (params.length && isDummy(params[params.length - 1]))
{ params.pop(); }
return this.parseArrowExpression(this.startNodeAt(parenStart), params)
}
if (this.options.preserveParens) {
var par = this.startNodeAt(parenStart);
par.expression = inner;
inner = this.finishNode(par, "ParenthesizedExpression");
}
return inner
case tokTypes.bracketL:
node = this.startNode();
node.elements = this.parseExprList(tokTypes.bracketR, true);
return this.finishNode(node, "ArrayExpression")
case tokTypes.braceL:
this.toks.overrideContext(tokContexts.b_expr);
return this.parseObj()
case tokTypes._class:
return this.parseClass(false)
case tokTypes._function:
node = this.startNode();
this.next();
return this.parseFunction(node, false)
case tokTypes._new:
return this.parseNew()
case tokTypes.backQuote:
return this.parseTemplate()
case tokTypes._import:
if (this.options.ecmaVersion >= 11) {
return this.parseExprImport()
} else {
return this.dummyIdent()
}
default:
return this.dummyIdent()
}
};
lp.parseExprImport = function() {
var node = this.startNode();
var meta = this.parseIdent(true);
switch (this.tok.type) {
case tokTypes.parenL:
return this.parseDynamicImport(node)
case tokTypes.dot:
node.meta = meta;
return this.parseImportMeta(node)
default:
node.name = "import";
return this.finishNode(node, "Identifier")
}
};
lp.parseDynamicImport = function(node) {
node.source = this.parseExprList(tokTypes.parenR)[0] || this.dummyString();
return this.finishNode(node, "ImportExpression")
};
lp.parseImportMeta = function(node) {
this.next(); // skip '.'
node.property = this.parseIdent(true);
return this.finishNode(node, "MetaProperty")
};
lp.parseNew = function() {
var node = this.startNode(), startIndent = this.curIndent, line = this.curLineStart;
var meta = this.parseIdent(true);
if (this.options.ecmaVersion >= 6 && this.eat(tokTypes.dot)) {
node.meta = meta;
node.property = this.parseIdent(true);
return this.finishNode(node, "MetaProperty")
}
var start = this.storeCurrentPos();
node.callee = this.parseSubscripts(this.parseExprAtom(), start, true, startIndent, line);
if (this.tok.type === tokTypes.parenL) {
node.arguments = this.parseExprList(tokTypes.parenR);
} else {
node.arguments = [];
}
return this.finishNode(node, "NewExpression")
};
lp.parseTemplateElement = function() {
var elem = this.startNode();
// The loose parser accepts invalid unicode escapes even in untagged templates.
if (this.tok.type === tokTypes.invalidTemplate) {
elem.value = {
raw: this.tok.value,
cooked: null
};
} else {
elem.value = {
raw: this.input.slice(this.tok.start, this.tok.end).replace(/\r\n?/g, "\n"),
cooked: this.tok.value
};
}
this.next();
elem.tail = this.tok.type === tokTypes.backQuote;
return this.finishNode(elem, "TemplateElement")
};
lp.parseTemplate = function() {
var node = this.startNode();
this.next();
node.expressions = [];
var curElt = this.parseTemplateElement();
node.quasis = [curElt];
while (!curElt.tail) {
this.next();
node.expressions.push(this.parseExpression());
if (this.expect(tokTypes.braceR)) {
curElt = this.parseTemplateElement();
} else {
curElt = this.startNode();
curElt.value = {cooked: "", raw: ""};
curElt.tail = true;
this.finishNode(curElt, "TemplateElement");
}
node.quasis.push(curElt);
}
this.expect(tokTypes.backQuote);
return this.finishNode(node, "TemplateLiteral")
};
lp.parseObj = function() {
var node = this.startNode();
node.properties = [];
this.pushCx();
var indent = this.curIndent + 1, line = this.curLineStart;
this.eat(tokTypes.braceL);
if (this.curIndent + 1 < indent) { indent = this.curIndent; line = this.curLineStart; }
while (!this.closes(tokTypes.braceR, indent, line)) {
var prop = this.startNode(), isGenerator = (void 0), isAsync = (void 0), start = (void 0);
if (this.options.ecmaVersion >= 9 && this.eat(tokTypes.ellipsis)) {
prop.argument = this.parseMaybeAssign();
node.properties.push(this.finishNode(prop, "SpreadElement"));
this.eat(tokTypes.comma);
continue
}
if (this.options.ecmaVersion >= 6) {
start = this.storeCurrentPos();
prop.method = false;
prop.shorthand = false;
isGenerator = this.eat(tokTypes.star);
}
this.parsePropertyName(prop);
if (this.toks.isAsyncProp(prop)) {
isAsync = true;
isGenerator = this.options.ecmaVersion >= 9 && this.eat(tokTypes.star);
this.parsePropertyName(prop);
} else {
isAsync = false;
}
if (isDummy(prop.key)) { if (isDummy(this.parseMaybeAssign())) { this.next(); } this.eat(tokTypes.comma); continue }
if (this.eat(tokTypes.colon)) {
prop.kind = "init";
prop.value = this.parseMaybeAssign();
} else if (this.options.ecmaVersion >= 6 && (this.tok.type === tokTypes.parenL || this.tok.type === tokTypes.braceL)) {
prop.kind = "init";
prop.method = true;
prop.value = this.parseMethod(isGenerator, isAsync);
} else if (this.options.ecmaVersion >= 5 && prop.key.type === "Identifier" &&
!prop.computed && (prop.key.name === "get" || prop.key.name === "set") &&
(this.tok.type !== tokTypes.comma && this.tok.type !== tokTypes.braceR && this.tok.type !== tokTypes.eq)) {
prop.kind = prop.key.name;
this.parsePropertyName(prop);
prop.value = this.parseMethod(false);
} else {
prop.kind = "init";
if (this.options.ecmaVersion >= 6) {
if (this.eat(tokTypes.eq)) {
var assign = this.startNodeAt(start);
assign.operator = "=";
assign.left = prop.key;
assign.right = this.parseMaybeAssign();
prop.value = this.finishNode(assign, "AssignmentExpression");
} else {
prop.value = prop.key;
}
} else {
prop.value = this.dummyIdent();
}
prop.shorthand = true;
}
node.properties.push(this.finishNode(prop, "Property"));
this.eat(tokTypes.comma);
}
this.popCx();
if (!this.eat(tokTypes.braceR)) {
// If there is no closing brace, make the node span to the start
// of the next token (this is useful for Tern)
this.last.end = this.tok.start;
if (this.options.locations) { this.last.loc.end = this.tok.loc.start; }
}
return this.finishNode(node, "ObjectExpression")
};
lp.parsePropertyName = function(prop) {
if (this.options.ecmaVersion >= 6) {
if (this.eat(tokTypes.bracketL)) {
prop.computed = true;
prop.key = this.parseExpression();
this.expect(tokTypes.bracketR);
return
} else {
prop.computed = false;
}
}
var key = (this.tok.type === tokTypes.num || this.tok.type === tokTypes.string) ? this.parseExprAtom() : this.parseIdent();
prop.key = key || this.dummyIdent();
};
lp.parsePropertyAccessor = function() {
if (this.tok.type === tokTypes.name || this.tok.type.keyword) { return this.parseIdent() }
if (this.tok.type === tokTypes.privateId) { return this.parsePrivateIdent() }
};
lp.parseIdent = function() {
var name = this.tok.type === tokTypes.name ? this.tok.value : this.tok.type.keyword;
if (!name) { return this.dummyIdent() }
var node = this.startNode();
this.next();
node.name = name;
return this.finishNode(node, "Identifier")
};
lp.parsePrivateIdent = function() {
var node = this.startNode();
node.name = this.tok.value;
this.next();
return this.finishNode(node, "PrivateIdentifier")
};
lp.initFunction = function(node) {
node.id = null;
node.params = [];
if (this.options.ecmaVersion >= 6) {
node.generator = false;
node.expression = false;
}
if (this.options.ecmaVersion >= 8)
{ node.async = false; }
};
// Convert existing expression atom to assignable pattern
// if possible.
lp.toAssignable = function(node, binding) {
if (!node || node.type === "Identifier" || (node.type === "MemberExpression" && !binding)) ; else if (node.type === "ParenthesizedExpression") {
this.toAssignable(node.expression, binding);
} else if (this.options.ecmaVersion < 6) {
return this.dummyIdent()
} else if (node.type === "ObjectExpression") {
node.type = "ObjectPattern";
for (var i = 0, list = node.properties; i < list.length; i += 1)
{
var prop = list[i];
this.toAssignable(prop, binding);
}
} else if (node.type === "ArrayExpression") {
node.type = "ArrayPattern";
this.toAssignableList(node.elements, binding);
} else if (node.type === "Property") {
this.toAssignable(node.value, binding);
} else if (node.type === "SpreadElement") {
node.type = "RestElement";
this.toAssignable(node.argument, binding);
} else if (node.type === "AssignmentExpression") {
node.type = "AssignmentPattern";
delete node.operator;
} else {
return this.dummyIdent()
}
return node
};
lp.toAssignableList = function(exprList, binding) {
for (var i = 0, list = exprList; i < list.length; i += 1)
{
var expr = list[i];
this.toAssignable(expr, binding);
}
return exprList
};
lp.parseFunctionParams = function(params) {
params = this.parseExprList(tokTypes.parenR);
return this.toAssignableList(params, true)
};
lp.parseMethod = function(isGenerator, isAsync) {
var node = this.startNode(), oldInAsync = this.inAsync, oldInGenerator = this.inGenerator, oldInFunction = this.inFunction;
this.initFunction(node);
if (this.options.ecmaVersion >= 6)
{ node.generator = !!isGenerator; }
if (this.options.ecmaVersion >= 8)
{ node.async = !!isAsync; }
this.inAsync = node.async;
this.inGenerator = node.generator;
this.inFunction = true;
node.params = this.parseFunctionParams();
node.body = this.parseBlock();
this.toks.adaptDirectivePrologue(node.body.body);
this.inAsync = oldInAsync;
this.inGenerator = oldInGenerator;
this.inFunction = oldInFunction;
return this.finishNode(node, "FunctionExpression")
};
lp.parseArrowExpression = function(node, params, isAsync) {
var oldInAsync = this.inAsync, oldInGenerator = this.inGenerator, oldInFunction = this.inFunction;
this.initFunction(node);
if (this.options.ecmaVersion >= 8)
{ node.async = !!isAsync; }
this.inAsync = node.async;
this.inGenerator = false;
this.inFunction = true;
node.params = this.toAssignableList(params, true);
node.expression = this.tok.type !== tokTypes.braceL;
if (node.expression) {
node.body = this.parseMaybeAssign();
} else {
node.body = this.parseBlock();
this.toks.adaptDirectivePrologue(node.body.body);
}
this.inAsync = oldInAsync;
this.inGenerator = oldInGenerator;
this.inFunction = oldInFunction;
return this.finishNode(node, "ArrowFunctionExpression")
};
lp.parseExprList = function(close, allowEmpty) {
this.pushCx();
var indent = this.curIndent, line = this.curLineStart, elts = [];
this.next(); // Opening bracket
while (!this.closes(close, indent + 1, line)) {
if (this.eat(tokTypes.comma)) {
elts.push(allowEmpty ? null : this.dummyIdent());
continue
}
var elt = this.parseMaybeAssign();
if (isDummy(elt)) {
if (this.closes(close, indent, line)) { break }
this.next();
} else {
elts.push(elt);
}
this.eat(tokTypes.comma);
}
this.popCx();
if (!this.eat(close)) {
// If there is no closing brace, make the node span to the start
// of the next token (this is useful for Tern)
this.last.end = this.tok.start;
if (this.options.locations) { this.last.loc.end = this.tok.loc.start; }
}
return elts
};
lp.parseAwait = function() {
var node = this.startNode();
this.next();
node.argument = this.parseMaybeUnary();
return this.finishNode(node, "AwaitExpression")
};
// Acorn: Loose parser
defaultOptions.tabSize = 4;
function parse(input, options) {
return LooseParser.parse(input, options)
}
export { LooseParser, isDummy, parse };
Zerion Mini Shell 1.0