sucrase - npm Package Compare versions

Comparing version 3.29.0 to 3.30.0

dist/esm/index.js

@@ -34,3 +34,3 @@ import CJSImportProcessor from "./CJSImportProcessor";
   /* istanbul ignore next */
-  return "3.29.0";
+  return "3.30.0";
 }
@@ -37,0 +37,0 @@

dist/esm/Options.js

@@ -7,2 +7,3 @@ import {createCheckers} from "ts-interface-checker";
 
+ 
 
@@ -94,5 +95,4 @@
 
-
 export function validateOptions(options) {
   OptionsChecker.strictCheck(options);
 }

dist/esm/parser/plugins/typescript.js

@@ -199,4 +199,6 @@ import {
 function tsParseTypeParameter() {
+  eat(tt._const);
   const hadIn = eat(tt._in);
   const hadOut = eatContextual(ContextualKeyword._out);
+  eat(tt._const);
   if ((hadIn || hadOut) && !match(tt.name)) {
@@ -969,3 +971,3 @@ // The "in" or "out" keyword must have actually been the type parameter
       const oldIsType = pushTypeContext(1);
-      parseVarStatement(state.type);
+      parseVarStatement(state.type !== tt._var);
       popTypeContext(oldIsType);
@@ -1143,5 +1145,3 @@ return true;
  * This hack is useful to handle situations like foo<<T>() => void>() where
- * there can legitimately be two open-angle-brackets in a row in TS. This
- * situation is very obscure and (as of this writing) is handled by Babel but
- * not TypeScript itself, so it may be fine in the future to remove this case.
+ * there can legitimately be two open-angle-brackets in a row in TS.
  */
@@ -1306,4 +1306,10 @@ function tsParseTypeArgumentsWithPossibleBitshift() {
   } else {
-    if (isContextual(ContextualKeyword._type) && lookaheadType() === tt.braceL) {
-      next();
+    if (isContextual(ContextualKeyword._type)) {
+      const nextType = lookaheadType();
+      // export type {foo} from 'a';
+      // export type * from 'a';'
+      // export type * as ns from 'a';'
+      if (nextType === tt.braceL || nextType === tt.star) {
+        next();
+      }
     }
@@ -1310,0 +1316,0 @@ return false;

dist/esm/parser/tokenizer/index.js

@@ -515,7 +515,21 @@ /* eslint max-len: 0 */
     }
-    // This still might be two instances of <, e.g. the TS type argument
-    // expression f<<T>() => void>() , but parse as left shift for now and we'll
-    // retokenize if necessary. We can't use isType for this case because we
-    // don't know yet if we're in a type.
-    finishOp(tt.bitShiftL, 2);
+    // We see <<, but need to be really careful about whether to treat it as a
+    // true left-shift or as two < tokens.
+    if (state.isType) {
+      // Within a type, << might come up in a snippet like `Array<<T>() => void>`,
+      // so treat it as two < tokens. Importantly, this should only override <<
+      // rather than other tokens like <= . If we treated <= as < in a type
+      // context, then the snippet `a as T <= 1` would incorrectly start parsing
+      // a type argument on T. We don't need to worry about `a as T << 1`
+      // because TypeScript disallows that syntax.
+      finishOp(tt.lessThan, 1);
+    } else {
+      // Outside a type, this might be a true left-shift operator, or it might
+      // still be two open-type-arg tokens, such as in `f<<T>() => void>()`. We
+      // look at the token while considering the `f`, so we don't yet know that
+      // we're in a type context. In this case, we initially tokenize as a
+      // left-shift and correct after-the-fact as necessary in
+      // tsParseTypeArgumentsWithPossibleBitshift .
+      finishOp(tt.bitShiftL, 2);
+    }
     return;
@@ -562,3 +576,10 @@ }
  * Called after `as` expressions in TS; we're switching from a type to a
- * non-type context, so a > token may actually be >= .
+ * non-type context, so a > token may actually be >= . This is needed because >=
+ * must be tokenized as a > in a type context because of code like
+ * `const x: Array<T>=[];`, but `a as T >= 1` is a code example where it must be
+ * treated as >=.
+ *
+ * Notably, this only applies to >, not <. In a code snippet like `a as T <= 1`,
+ * we must NOT tokenize as <, or else the type parser will start parsing a type
+ * argument and fail.
  */
@@ -565,0 +586,0 @@ export function rescan_gt() {

dist/esm/parser/tokenizer/keywords.js

@@ -42,2 +42,3 @@ export var ContextualKeyword; (function (ContextualKeyword) {
   const _unique = _type + 1; ContextualKeyword[ContextualKeyword["_unique"] = _unique] = "_unique";
+  const _using = _unique + 1; ContextualKeyword[ContextualKeyword["_using"] = _using] = "_using";
 })(ContextualKeyword || (ContextualKeyword = {}));

dist/esm/parser/tokenizer/readWordTree.js

@@ -8,3 +8,3 @@ // Generated file, do not edit! Run "yarn generate" to re-generate this file.
   // ""
-  -1, 27, 783, 918, 1755, 2376, 2862, 3483, -1, 3699, -1, 4617, 4752, 4833, 5130, 5508, 5940, -1, 6480, 6939, 7749, 8181, 8343, 8505, -1, 8721, -1,
+  -1, 27, 783, 918, 1755, 2376, 2862, 3483, -1, 3699, -1, 4617, 4752, 4833, 5130, 5508, 5940, -1, 6480, 6939, 7749, 8181, 8451, 8613, -1, 8829, -1,
   // "a"
@@ -615,3 +615,3 @@ -1, -1, 54, 243, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 432, -1, -1, -1, 675, -1, -1, -1,
   // "u"
-  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 8208, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 8208, -1, -1, -1, -1, 8343, -1, -1, -1, -1, -1, -1, -1,
   // "un"
@@ -627,40 +627,48 @@ -1, -1, -1, -1, -1, -1, -1, -1, -1, 8235, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
   ContextualKeyword._unique << 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "us"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, 8370, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "usi"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 8397, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "usin"
+  -1, -1, -1, -1, -1, -1, -1, 8424, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "using"
+  ContextualKeyword._using << 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
   // "v"
-  -1, 8370, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 8424, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  -1, 8478, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 8532, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
   // "va"
-  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 8397, -1, -1, -1, -1, -1, -1, -1, -1,
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 8505, -1, -1, -1, -1, -1, -1, -1, -1,
   // "var"
   (tt._var << 1) + 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
   // "vo"
-  -1, -1, -1, -1, -1, -1, -1, -1, -1, 8451, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, 8559, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
   // "voi"
-  -1, -1, -1, -1, 8478, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  -1, -1, -1, -1, 8586, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
   // "void"
   (tt._void << 1) + 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
   // "w"
-  -1, -1, -1, -1, -1, -1, -1, -1, 8532, 8640, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  -1, -1, -1, -1, -1, -1, -1, -1, 8640, 8748, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
   // "wh"
-  -1, -1, -1, -1, -1, -1, -1, -1, -1, 8559, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, 8667, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
   // "whi"
-  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 8586, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 8694, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
   // "whil"
-  -1, -1, -1, -1, -1, 8613, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  -1, -1, -1, -1, -1, 8721, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
   // "while"
   (tt._while << 1) + 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
   // "wi"
-  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 8667, -1, -1, -1, -1, -1, -1,
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 8775, -1, -1, -1, -1, -1, -1,
   // "wit"
-  -1, -1, -1, -1, -1, -1, -1, -1, 8694, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  -1, -1, -1, -1, -1, -1, -1, -1, 8802, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
   // "with"
   (tt._with << 1) + 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
   // "y"
-  -1, -1, -1, -1, -1, -1, -1, -1, -1, 8748, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, 8856, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
   // "yi"
-  -1, -1, -1, -1, -1, 8775, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  -1, -1, -1, -1, -1, 8883, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
   // "yie"
-  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 8802, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 8910, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
   // "yiel"
-  -1, -1, -1, -1, 8829, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  -1, -1, -1, -1, 8937, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
   // "yield"
   (tt._yield << 1) + 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
 ]);

dist/esm/parser/traverser/statement.js

@@ -82,5 +82,7 @@ /* eslint max-len: 0 */
   expectContextual,
+  hasFollowingLineBreak,
   hasPrecedingLineBreak,
   isContextual,
   isLineTerminator,
+  isLookaheadContextual,
   semicolon,
@@ -177,3 +179,3 @@ unexpected,
     case tt._var:
-      parseVarStatement(starttype);
+      parseVarStatement(starttype !== tt._var);
       return;
@@ -217,2 +219,11 @@
         }
+      } else if (
+        state.contextualKeyword === ContextualKeyword._using &&
+        !hasFollowingLineBreak() &&
+        // Statements like `using[0]` and `using in foo` aren't actual using
+        // declarations.
+        lookaheadType() === tt.name
+      ) {
+        parseVarStatement(true);
+        return;
       }
@@ -266,4 +277,4 @@ default:
     }
+    parseMaybeDecoratorArguments();
   }
-  parseMaybeDecoratorArguments();
 }
@@ -315,2 +326,19 @@
 
+/**
+ * Determine if this token is a `using` declaration (explicit resource
+ * management) as part of a loop.
+ * https://github.com/tc39/proposal-explicit-resource-management
+ */
+function isUsingInLoop() {
+  if (!isContextual(ContextualKeyword._using)) {
+    return false;
+  }
+  // This must be `for (using of`, where `using` is the name of the loop
+  // variable.
+  if (isLookaheadContextual(ContextualKeyword._of)) {
+    return false;
+  }
+  return true;
+}
+
 // Disambiguating between a `for` and a `for`/`in` or `for`/`of`
@@ -341,6 +369,5 @@ // loop is non-trivial. Basically, we have to parse the init `var`
 
-  if (match(tt._var) || match(tt._let) || match(tt._const)) {
-    const varKind = state.type;
+  if (match(tt._var) || match(tt._let) || match(tt._const) || isUsingInLoop()) {
     next();
-    parseVar(true, varKind);
+    parseVar(true, state.type !== tt._var);
     if (match(tt._in) || isContextual(ContextualKeyword._of)) {
@@ -462,5 +489,5 @@ parseForIn(forAwait);
 
-export function parseVarStatement(kind) {
+export function parseVarStatement(isBlockScope) {
   next();
-  parseVar(false, kind);
+  parseVar(false, isBlockScope);
   semicolon();
@@ -553,5 +580,4 @@ }
 
-function parseVar(isFor, kind) {
+function parseVar(isFor, isBlockScope) {
   while (true) {
-    const isBlockScope = kind === tt._const || kind === tt._let;
     parseVarHead(isBlockScope);
@@ -1094,2 +1120,46 @@ if (eat(tt.eq)) {
 
+/**
+ * Starting at the `module` token in an import, determine if it was truly an
+ * import reflection token or just looks like one.
+ *
+ * Returns true for:
+ * import module foo from "foo";
+ * import module from from "foo";
+ *
+ * Returns false for:
+ * import module from "foo";
+ * import module, {bar} from "foo";
+ */
+function isImportReflection() {
+  const snapshot = state.snapshot();
+  expectContextual(ContextualKeyword._module);
+  if (eatContextual(ContextualKeyword._from)) {
+    if (isContextual(ContextualKeyword._from)) {
+      state.restoreFromSnapshot(snapshot);
+      return true;
+    } else {
+      state.restoreFromSnapshot(snapshot);
+      return false;
+    }
+  } else if (match(tt.comma)) {
+    state.restoreFromSnapshot(snapshot);
+    return false;
+  } else {
+    state.restoreFromSnapshot(snapshot);
+    return true;
+  }
+}
+
+/**
+ * Eat the "module" token from the import reflection proposal.
+ * https://github.com/tc39/proposal-import-reflection
+ */
+function parseMaybeImportReflection() {
+  // isImportReflection does snapshot/restore, so only run it if we see the word
+  // "module".
+  if (isContextual(ContextualKeyword._module) && isImportReflection()) {
+    next();
+  }
+}
+
 // Parses import declaration.
@@ -1129,2 +1199,3 @@
   } else {
+    parseMaybeImportReflection();
     parseImportSpecifiers();
@@ -1131,0 +1202,0 @@ expectContextual(ContextualKeyword._from);

dist/esm/transformers/CJSImportTransformer.js

@@ -307,3 +307,4 @@
       this.tokens.matches2(tt._export, tt._class) ||
-      this.tokens.matches3(tt._export, tt._abstract, tt._class)
+      this.tokens.matches3(tt._export, tt._abstract, tt._class) ||
+      this.tokens.matches2(tt._export, tt.at)
     ) {
@@ -319,12 +320,27 @@ this.processExportClass();
     } else if (
-      this.tokens.matches3(tt._export, tt.name, tt.braceL) &&
+      this.tokens.matches2(tt._export, tt.name) &&
       this.tokens.matchesContextualAtIndex(this.tokens.currentIndex() + 1, ContextualKeyword._type)
     ) {
-      // TS `export type {` case: just remove the export entirely.
+      // export type {a};
+      // export type {a as b};
+      // export type {a} from './b';
+      // export type * from './b';
+      // export type * as ns from './b';
       this.tokens.removeInitialToken();
-      while (!this.tokens.matches1(tt.braceR)) {
+      this.tokens.removeToken();
+      if (this.tokens.matches1(tt.braceL)) {
+        while (!this.tokens.matches1(tt.braceR)) {
+          this.tokens.removeToken();
+        }
         this.tokens.removeToken();
+      } else {
+        // *
+        this.tokens.removeToken();
+        if (this.tokens.matches1(tt._as)) {
+          // as
+          this.tokens.removeToken();
+          // ns
+          this.tokens.removeToken();
+        }
       }
-      this.tokens.removeToken();
-
       // Remove type re-export `... } from './T'`
@@ -488,6 +504,8 @@ if (
       this.tokens.matches4(tt._export, tt._default, tt._class, tt.name) ||
-      this.tokens.matches5(tt._export, tt._default, tt._abstract, tt._class, tt.name)
+      this.tokens.matches5(tt._export, tt._default, tt._abstract, tt._class, tt.name) ||
+      this.tokens.matches3(tt._export, tt._default, tt.at)
     ) {
       this.tokens.removeInitialToken();
       this.tokens.removeToken();
+      this.copyDecorators();
       if (this.tokens.matches1(tt._abstract)) {
@@ -498,4 +516,2 @@ this.tokens.removeToken();
       this.tokens.appendCode(` exports.default = ${name};`);
-    } else if (this.tokens.matches3(tt._export, tt._default, tt.at)) {
-      throw new Error("Export default statements with decorators are not yet supported.");
       // After this point, this is a plain "export default E" statement.
@@ -527,2 +543,24 @@ } else if (
 
+   copyDecorators() {
+    while (this.tokens.matches1(tt.at)) {
+      this.tokens.copyToken();
+      if (this.tokens.matches1(tt.parenL)) {
+        this.tokens.copyExpectedToken(tt.parenL);
+        this.rootTransformer.processBalancedCode();
+        this.tokens.copyExpectedToken(tt.parenR);
+      } else {
+        this.tokens.copyExpectedToken(tt.name);
+        while (this.tokens.matches1(tt.dot)) {
+          this.tokens.copyExpectedToken(tt.dot);
+          this.tokens.copyExpectedToken(tt.name);
+        }
+        if (this.tokens.matches1(tt.parenL)) {
+          this.tokens.copyExpectedToken(tt.parenL);
+          this.rootTransformer.processBalancedCode();
+          this.tokens.copyExpectedToken(tt.parenR);
+        }
+      }
+    }
+  }
+
   /**
@@ -727,2 +765,3 @@ * Transform a declaration like `export var`, `export let`, or `export const`.
     this.tokens.removeInitialToken();
+    this.copyDecorators();
     if (this.tokens.matches1(tt._abstract)) {
@@ -729,0 +768,0 @@ this.tokens.removeToken();

dist/esm/transformers/ESMImportTransformer.js

@@ -89,12 +89,27 @@
     if (
-      this.tokens.matches3(tt._export, tt.name, tt.braceL) &&
+      this.tokens.matches2(tt._export, tt.name) &&
       this.tokens.matchesContextualAtIndex(this.tokens.currentIndex() + 1, ContextualKeyword._type)
     ) {
-      // TS `export type {` case: just remove the export entirely.
+      // export type {a};
+      // export type {a as b};
+      // export type {a} from './b';
+      // export type * from './b';
+      // export type * as ns from './b';
       this.tokens.removeInitialToken();
-      while (!this.tokens.matches1(tt.braceR)) {
+      this.tokens.removeToken();
+      if (this.tokens.matches1(tt.braceL)) {
+        while (!this.tokens.matches1(tt.braceR)) {
+          this.tokens.removeToken();
+        }
         this.tokens.removeToken();
+      } else {
+        // *
+        this.tokens.removeToken();
+        if (this.tokens.matches1(tt._as)) {
+          // as
+          this.tokens.removeToken();
+          // ns
+          this.tokens.removeToken();
+        }
       }
-      this.tokens.removeToken();
-
       // Remove type re-export `... } from './T'`
@@ -182,2 +197,10 @@ if (
 
+    // Skip the "module" token in import reflection.
+    if (
+      this.tokens.matchesContextual(ContextualKeyword._module) &&
+      this.tokens.matchesContextualAtIndex(this.tokens.currentIndex() + 2, ContextualKeyword._from)
+    ) {
+      this.tokens.copyToken();
+    }
+
     let foundNonTypeImport = false;
@@ -184,0 +207,0 @@ let needsComma = false;

dist/esm/util/getImportExportSpecifierInfo.js

 import {TokenType as tt} from "../parser/tokenizer/types";
 
 
+ 
 
@@ -17,3 +18,2 @@
 
-
 /**
@@ -20,0 +20,0 @@ * Determine information about this named import or named export specifier.

dist/index.js

@@ -34,3 +34,3 @@ "use strict";Object.defineProperty(exports, "__esModule", {value: true}); function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }var _CJSImportProcessor = require('./CJSImportProcessor'); var _CJSImportProcessor2 = _interopRequireDefault(_CJSImportProcessor);
   /* istanbul ignore next */
-  return "3.29.0";
+  return "3.30.0";
 } exports.getVersion = getVersion;
@@ -37,0 +37,0 @@

dist/parser/plugins/typescript.js

@@ -199,4 +199,6 @@ "use strict";Object.defineProperty(exports, "__esModule", {value: true});
 function tsParseTypeParameter() {
+  _index.eat.call(void 0, _types.TokenType._const);
   const hadIn = _index.eat.call(void 0, _types.TokenType._in);
   const hadOut = _util.eatContextual.call(void 0, _keywords.ContextualKeyword._out);
+  _index.eat.call(void 0, _types.TokenType._const);
   if ((hadIn || hadOut) && !_index.match.call(void 0, _types.TokenType.name)) {
@@ -969,3 +971,3 @@ // The "in" or "out" keyword must have actually been the type parameter
       const oldIsType = _index.pushTypeContext.call(void 0, 1);
-      _statement.parseVarStatement.call(void 0, _base.state.type);
+      _statement.parseVarStatement.call(void 0, _base.state.type !== _types.TokenType._var);
       _index.popTypeContext.call(void 0, oldIsType);
@@ -1143,5 +1145,3 @@ return true;
  * This hack is useful to handle situations like foo<<T>() => void>() where
- * there can legitimately be two open-angle-brackets in a row in TS. This
- * situation is very obscure and (as of this writing) is handled by Babel but
- * not TypeScript itself, so it may be fine in the future to remove this case.
+ * there can legitimately be two open-angle-brackets in a row in TS.
  */
@@ -1306,4 +1306,10 @@ function tsParseTypeArgumentsWithPossibleBitshift() {
   } else {
-    if (_util.isContextual.call(void 0, _keywords.ContextualKeyword._type) && _index.lookaheadType.call(void 0, ) === _types.TokenType.braceL) {
-      _index.next.call(void 0, );
+    if (_util.isContextual.call(void 0, _keywords.ContextualKeyword._type)) {
+      const nextType = _index.lookaheadType.call(void 0, );
+      // export type {foo} from 'a';
+      // export type * from 'a';'
+      // export type * as ns from 'a';'
+      if (nextType === _types.TokenType.braceL || nextType === _types.TokenType.star) {
+        _index.next.call(void 0, );
+      }
     }
@@ -1310,0 +1316,0 @@ return false;

dist/parser/tokenizer/index.js

@@ -515,7 +515,21 @@ "use strict";Object.defineProperty(exports, "__esModule", {value: true}); function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }/* eslint max-len: 0 */
     }
-    // This still might be two instances of <, e.g. the TS type argument
-    // expression f<<T>() => void>() , but parse as left shift for now and we'll
-    // retokenize if necessary. We can't use isType for this case because we
-    // don't know yet if we're in a type.
-    finishOp(_types.TokenType.bitShiftL, 2);
+    // We see <<, but need to be really careful about whether to treat it as a
+    // true left-shift or as two < tokens.
+    if (_base.state.isType) {
+      // Within a type, << might come up in a snippet like `Array<<T>() => void>`,
+      // so treat it as two < tokens. Importantly, this should only override <<
+      // rather than other tokens like <= . If we treated <= as < in a type
+      // context, then the snippet `a as T <= 1` would incorrectly start parsing
+      // a type argument on T. We don't need to worry about `a as T << 1`
+      // because TypeScript disallows that syntax.
+      finishOp(_types.TokenType.lessThan, 1);
+    } else {
+      // Outside a type, this might be a true left-shift operator, or it might
+      // still be two open-type-arg tokens, such as in `f<<T>() => void>()`. We
+      // look at the token while considering the `f`, so we don't yet know that
+      // we're in a type context. In this case, we initially tokenize as a
+      // left-shift and correct after-the-fact as necessary in
+      // tsParseTypeArgumentsWithPossibleBitshift .
+      finishOp(_types.TokenType.bitShiftL, 2);
+    }
     return;
@@ -562,3 +576,10 @@ }
  * Called after `as` expressions in TS; we're switching from a type to a
- * non-type context, so a > token may actually be >= .
+ * non-type context, so a > token may actually be >= . This is needed because >=
+ * must be tokenized as a > in a type context because of code like
+ * `const x: Array<T>=[];`, but `a as T >= 1` is a code example where it must be
+ * treated as >=.
+ *
+ * Notably, this only applies to >, not <. In a code snippet like `a as T <= 1`,
+ * we must NOT tokenize as <, or else the type parser will start parsing a type
+ * argument and fail.
  */
@@ -565,0 +586,0 @@ function rescan_gt() {

dist/parser/tokenizer/keywords.js

@@ -42,2 +42,3 @@ "use strict";Object.defineProperty(exports, "__esModule", {value: true});var ContextualKeyword; (function (ContextualKeyword) {
   const _unique = _type + 1; ContextualKeyword[ContextualKeyword["_unique"] = _unique] = "_unique";
+  const _using = _unique + 1; ContextualKeyword[ContextualKeyword["_using"] = _using] = "_using";
 })(ContextualKeyword || (exports.ContextualKeyword = ContextualKeyword = {}));

dist/parser/tokenizer/readWordTree.js

@@ -8,3 +8,3 @@ "use strict";Object.defineProperty(exports, "__esModule", {value: true});// Generated file, do not edit! Run "yarn generate" to re-generate this file.
   // ""
-  -1, 27, 783, 918, 1755, 2376, 2862, 3483, -1, 3699, -1, 4617, 4752, 4833, 5130, 5508, 5940, -1, 6480, 6939, 7749, 8181, 8343, 8505, -1, 8721, -1,
+  -1, 27, 783, 918, 1755, 2376, 2862, 3483, -1, 3699, -1, 4617, 4752, 4833, 5130, 5508, 5940, -1, 6480, 6939, 7749, 8181, 8451, 8613, -1, 8829, -1,
   // "a"
@@ -615,3 +615,3 @@ -1, -1, 54, 243, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 432, -1, -1, -1, 675, -1, -1, -1,
   // "u"
-  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 8208, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 8208, -1, -1, -1, -1, 8343, -1, -1, -1, -1, -1, -1, -1,
   // "un"
@@ -627,40 +627,48 @@ -1, -1, -1, -1, -1, -1, -1, -1, -1, 8235, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
   _keywords.ContextualKeyword._unique << 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "us"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, 8370, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "usi"
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 8397, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "usin"
+  -1, -1, -1, -1, -1, -1, -1, 8424, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  // "using"
+  _keywords.ContextualKeyword._using << 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
   // "v"
-  -1, 8370, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 8424, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  -1, 8478, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 8532, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
   // "va"
-  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 8397, -1, -1, -1, -1, -1, -1, -1, -1,
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 8505, -1, -1, -1, -1, -1, -1, -1, -1,
   // "var"
   (_types.TokenType._var << 1) + 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
   // "vo"
-  -1, -1, -1, -1, -1, -1, -1, -1, -1, 8451, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, 8559, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
   // "voi"
-  -1, -1, -1, -1, 8478, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  -1, -1, -1, -1, 8586, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
   // "void"
   (_types.TokenType._void << 1) + 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
   // "w"
-  -1, -1, -1, -1, -1, -1, -1, -1, 8532, 8640, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  -1, -1, -1, -1, -1, -1, -1, -1, 8640, 8748, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
   // "wh"
-  -1, -1, -1, -1, -1, -1, -1, -1, -1, 8559, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, 8667, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
   // "whi"
-  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 8586, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 8694, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
   // "whil"
-  -1, -1, -1, -1, -1, 8613, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  -1, -1, -1, -1, -1, 8721, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
   // "while"
   (_types.TokenType._while << 1) + 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
   // "wi"
-  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 8667, -1, -1, -1, -1, -1, -1,
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 8775, -1, -1, -1, -1, -1, -1,
   // "wit"
-  -1, -1, -1, -1, -1, -1, -1, -1, 8694, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  -1, -1, -1, -1, -1, -1, -1, -1, 8802, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
   // "with"
   (_types.TokenType._with << 1) + 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
   // "y"
-  -1, -1, -1, -1, -1, -1, -1, -1, -1, 8748, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, 8856, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
   // "yi"
-  -1, -1, -1, -1, -1, 8775, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  -1, -1, -1, -1, -1, 8883, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
   // "yie"
-  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 8802, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 8910, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
   // "yiel"
-  -1, -1, -1, -1, 8829, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  -1, -1, -1, -1, 8937, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
   // "yield"
   (_types.TokenType._yield << 1) + 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
 ]); exports.READ_WORD_TREE = READ_WORD_TREE;

dist/parser/traverser/statement.js

@@ -87,2 +87,4 @@ "use strict";Object.defineProperty(exports, "__esModule", {value: true});/* eslint max-len: 0 */
 
+
+
 var _util = require('./util');
@@ -177,3 +179,3 @@
     case _types.TokenType._var:
-      parseVarStatement(starttype);
+      parseVarStatement(starttype !== _types.TokenType._var);
       return;
@@ -217,2 +219,11 @@
         }
+      } else if (
+        _base.state.contextualKeyword === _keywords.ContextualKeyword._using &&
+        !_util.hasFollowingLineBreak.call(void 0, ) &&
+        // Statements like `using[0]` and `using in foo` aren't actual using
+        // declarations.
+        _tokenizer.lookaheadType.call(void 0, ) === _types.TokenType.name
+      ) {
+        parseVarStatement(true);
+        return;
       }
@@ -266,4 +277,4 @@ default:
     }
+    parseMaybeDecoratorArguments();
   }
-  parseMaybeDecoratorArguments();
 }
@@ -315,2 +326,19 @@
 
+/**
+ * Determine if this token is a `using` declaration (explicit resource
+ * management) as part of a loop.
+ * https://github.com/tc39/proposal-explicit-resource-management
+ */
+function isUsingInLoop() {
+  if (!_util.isContextual.call(void 0, _keywords.ContextualKeyword._using)) {
+    return false;
+  }
+  // This must be `for (using of`, where `using` is the name of the loop
+  // variable.
+  if (_util.isLookaheadContextual.call(void 0, _keywords.ContextualKeyword._of)) {
+    return false;
+  }
+  return true;
+}
+
 // Disambiguating between a `for` and a `for`/`in` or `for`/`of`
@@ -341,6 +369,5 @@ // loop is non-trivial. Basically, we have to parse the init `var`
 
-  if (_tokenizer.match.call(void 0, _types.TokenType._var) || _tokenizer.match.call(void 0, _types.TokenType._let) || _tokenizer.match.call(void 0, _types.TokenType._const)) {
-    const varKind = _base.state.type;
+  if (_tokenizer.match.call(void 0, _types.TokenType._var) || _tokenizer.match.call(void 0, _types.TokenType._let) || _tokenizer.match.call(void 0, _types.TokenType._const) || isUsingInLoop()) {
     _tokenizer.next.call(void 0, );
-    parseVar(true, varKind);
+    parseVar(true, _base.state.type !== _types.TokenType._var);
     if (_tokenizer.match.call(void 0, _types.TokenType._in) || _util.isContextual.call(void 0, _keywords.ContextualKeyword._of)) {
@@ -462,5 +489,5 @@ parseForIn(forAwait);
 
- function parseVarStatement(kind) {
+ function parseVarStatement(isBlockScope) {
   _tokenizer.next.call(void 0, );
-  parseVar(false, kind);
+  parseVar(false, isBlockScope);
   _util.semicolon.call(void 0, );
@@ -553,5 +580,4 @@ } exports.parseVarStatement = parseVarStatement;
 
-function parseVar(isFor, kind) {
+function parseVar(isFor, isBlockScope) {
   while (true) {
-    const isBlockScope = kind === _types.TokenType._const || kind === _types.TokenType._let;
     parseVarHead(isBlockScope);
@@ -1094,2 +1120,46 @@ if (_tokenizer.eat.call(void 0, _types.TokenType.eq)) {
 
+/**
+ * Starting at the `module` token in an import, determine if it was truly an
+ * import reflection token or just looks like one.
+ *
+ * Returns true for:
+ * import module foo from "foo";
+ * import module from from "foo";
+ *
+ * Returns false for:
+ * import module from "foo";
+ * import module, {bar} from "foo";
+ */
+function isImportReflection() {
+  const snapshot = _base.state.snapshot();
+  _util.expectContextual.call(void 0, _keywords.ContextualKeyword._module);
+  if (_util.eatContextual.call(void 0, _keywords.ContextualKeyword._from)) {
+    if (_util.isContextual.call(void 0, _keywords.ContextualKeyword._from)) {
+      _base.state.restoreFromSnapshot(snapshot);
+      return true;
+    } else {
+      _base.state.restoreFromSnapshot(snapshot);
+      return false;
+    }
+  } else if (_tokenizer.match.call(void 0, _types.TokenType.comma)) {
+    _base.state.restoreFromSnapshot(snapshot);
+    return false;
+  } else {
+    _base.state.restoreFromSnapshot(snapshot);
+    return true;
+  }
+}
+
+/**
+ * Eat the "module" token from the import reflection proposal.
+ * https://github.com/tc39/proposal-import-reflection
+ */
+function parseMaybeImportReflection() {
+  // isImportReflection does snapshot/restore, so only run it if we see the word
+  // "module".
+  if (_util.isContextual.call(void 0, _keywords.ContextualKeyword._module) && isImportReflection()) {
+    _tokenizer.next.call(void 0, );
+  }
+}
+
 // Parses import declaration.
@@ -1129,2 +1199,3 @@
   } else {
+    parseMaybeImportReflection();
     parseImportSpecifiers();
@@ -1131,0 +1202,0 @@ _util.expectContextual.call(void 0, _keywords.ContextualKeyword._from);

dist/transformers/CJSImportTransformer.js

@@ -307,3 +307,4 @@ "use strict";Object.defineProperty(exports, "__esModule", {value: true}); function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
       this.tokens.matches2(_types.TokenType._export, _types.TokenType._class) ||
-      this.tokens.matches3(_types.TokenType._export, _types.TokenType._abstract, _types.TokenType._class)
+      this.tokens.matches3(_types.TokenType._export, _types.TokenType._abstract, _types.TokenType._class) ||
+      this.tokens.matches2(_types.TokenType._export, _types.TokenType.at)
     ) {
@@ -319,12 +320,27 @@ this.processExportClass();
     } else if (
-      this.tokens.matches3(_types.TokenType._export, _types.TokenType.name, _types.TokenType.braceL) &&
+      this.tokens.matches2(_types.TokenType._export, _types.TokenType.name) &&
       this.tokens.matchesContextualAtIndex(this.tokens.currentIndex() + 1, _keywords.ContextualKeyword._type)
     ) {
-      // TS `export type {` case: just remove the export entirely.
+      // export type {a};
+      // export type {a as b};
+      // export type {a} from './b';
+      // export type * from './b';
+      // export type * as ns from './b';
       this.tokens.removeInitialToken();
-      while (!this.tokens.matches1(_types.TokenType.braceR)) {
+      this.tokens.removeToken();
+      if (this.tokens.matches1(_types.TokenType.braceL)) {
+        while (!this.tokens.matches1(_types.TokenType.braceR)) {
+          this.tokens.removeToken();
+        }
         this.tokens.removeToken();
+      } else {
+        // *
+        this.tokens.removeToken();
+        if (this.tokens.matches1(_types.TokenType._as)) {
+          // as
+          this.tokens.removeToken();
+          // ns
+          this.tokens.removeToken();
+        }
       }
-      this.tokens.removeToken();
-
       // Remove type re-export `... } from './T'`
@@ -488,6 +504,8 @@ if (
       this.tokens.matches4(_types.TokenType._export, _types.TokenType._default, _types.TokenType._class, _types.TokenType.name) ||
-      this.tokens.matches5(_types.TokenType._export, _types.TokenType._default, _types.TokenType._abstract, _types.TokenType._class, _types.TokenType.name)
+      this.tokens.matches5(_types.TokenType._export, _types.TokenType._default, _types.TokenType._abstract, _types.TokenType._class, _types.TokenType.name) ||
+      this.tokens.matches3(_types.TokenType._export, _types.TokenType._default, _types.TokenType.at)
     ) {
       this.tokens.removeInitialToken();
       this.tokens.removeToken();
+      this.copyDecorators();
       if (this.tokens.matches1(_types.TokenType._abstract)) {
@@ -498,4 +516,2 @@ this.tokens.removeToken();
       this.tokens.appendCode(` exports.default = ${name};`);
-    } else if (this.tokens.matches3(_types.TokenType._export, _types.TokenType._default, _types.TokenType.at)) {
-      throw new Error("Export default statements with decorators are not yet supported.");
       // After this point, this is a plain "export default E" statement.
@@ -527,2 +543,24 @@ } else if (
 
+   copyDecorators() {
+    while (this.tokens.matches1(_types.TokenType.at)) {
+      this.tokens.copyToken();
+      if (this.tokens.matches1(_types.TokenType.parenL)) {
+        this.tokens.copyExpectedToken(_types.TokenType.parenL);
+        this.rootTransformer.processBalancedCode();
+        this.tokens.copyExpectedToken(_types.TokenType.parenR);
+      } else {
+        this.tokens.copyExpectedToken(_types.TokenType.name);
+        while (this.tokens.matches1(_types.TokenType.dot)) {
+          this.tokens.copyExpectedToken(_types.TokenType.dot);
+          this.tokens.copyExpectedToken(_types.TokenType.name);
+        }
+        if (this.tokens.matches1(_types.TokenType.parenL)) {
+          this.tokens.copyExpectedToken(_types.TokenType.parenL);
+          this.rootTransformer.processBalancedCode();
+          this.tokens.copyExpectedToken(_types.TokenType.parenR);
+        }
+      }
+    }
+  }
+
   /**
@@ -727,2 +765,3 @@ * Transform a declaration like `export var`, `export let`, or `export const`.
     this.tokens.removeInitialToken();
+    this.copyDecorators();
     if (this.tokens.matches1(_types.TokenType._abstract)) {
@@ -729,0 +768,0 @@ this.tokens.removeToken();

dist/transformers/ESMImportTransformer.js

@@ -89,12 +89,27 @@ "use strict";Object.defineProperty(exports, "__esModule", {value: true}); function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
     if (
-      this.tokens.matches3(_types.TokenType._export, _types.TokenType.name, _types.TokenType.braceL) &&
+      this.tokens.matches2(_types.TokenType._export, _types.TokenType.name) &&
       this.tokens.matchesContextualAtIndex(this.tokens.currentIndex() + 1, _keywords.ContextualKeyword._type)
     ) {
-      // TS `export type {` case: just remove the export entirely.
+      // export type {a};
+      // export type {a as b};
+      // export type {a} from './b';
+      // export type * from './b';
+      // export type * as ns from './b';
       this.tokens.removeInitialToken();
-      while (!this.tokens.matches1(_types.TokenType.braceR)) {
+      this.tokens.removeToken();
+      if (this.tokens.matches1(_types.TokenType.braceL)) {
+        while (!this.tokens.matches1(_types.TokenType.braceR)) {
+          this.tokens.removeToken();
+        }
         this.tokens.removeToken();
+      } else {
+        // *
+        this.tokens.removeToken();
+        if (this.tokens.matches1(_types.TokenType._as)) {
+          // as
+          this.tokens.removeToken();
+          // ns
+          this.tokens.removeToken();
+        }
       }
-      this.tokens.removeToken();
-
       // Remove type re-export `... } from './T'`
@@ -182,2 +197,10 @@ if (
 
+    // Skip the "module" token in import reflection.
+    if (
+      this.tokens.matchesContextual(_keywords.ContextualKeyword._module) &&
+      this.tokens.matchesContextualAtIndex(this.tokens.currentIndex() + 2, _keywords.ContextualKeyword._from)
+    ) {
+      this.tokens.copyToken();
+    }
+
     let foundNonTypeImport = false;
@@ -184,0 +207,0 @@ let needsComma = false;

dist/types/parser/tokenizer/index.d.ts

@@ -79,3 +79,10 @@ import { ContextualKeyword } from "./keywords";
  * Called after `as` expressions in TS; we're switching from a type to a
- * non-type context, so a > token may actually be >= .
+ * non-type context, so a > token may actually be >= . This is needed because >=
+ * must be tokenized as a > in a type context because of code like
+ * `const x: Array<T>=[];`, but `a as T >= 1` is a code example where it must be
+ * treated as >=.
+ *
+ * Notably, this only applies to >, not <. In a code snippet like `a as T <= 1`,
+ * we must NOT tokenize as <, or else the type parser will start parsing a type
+ * argument and fail.
  */
@@ -82,0 +89,0 @@ export declare function rescan_gt(): void;

dist/types/parser/tokenizer/keywords.d.ts

@@ -41,3 +41,4 @@ export declare enum ContextualKeyword {
     _type = 38,
-    _unique = 39
+    _unique = 39,
+    _using = 40
 }

dist/types/parser/traverser/statement.d.ts

@@ -7,3 +7,3 @@ import { File } from "../index";
 export declare function baseParseMaybeDecoratorArguments(): void;
-export declare function parseVarStatement(kind: TokenType): void;
+export declare function parseVarStatement(isBlockScope: boolean): void;
 export declare function parseBlock(isFunctionScope?: boolean, contextId?: number): void;
@@ -10,0 +10,0 @@ export declare function parseBlockBody(end: TokenType): void;

dist/types/transformers/CJSImportTransformer.d.ts

@@ -64,2 +64,3 @@ import type CJSImportProcessor from "../CJSImportProcessor";
     private processExportDefault;
+    private copyDecorators;
     /**
@@ -66,0 +67,0 @@ * Transform a declaration like `export var`, `export let`, or `export const`.

package.json

 {
   "name": "sucrase",
-  "version": "3.29.0",
+  "version": "3.30.0",
   "description": "Super-fast alternative to Babel for when you can target modern JS runtimes",
@@ -62,3 +62,3 @@ "author": "Alan Pierce <[e-mail]>",
     "eslint-config-prettier": "^8.5.0",
-    "eslint-plugin-import": "^2.26.0",
+    "eslint-plugin-import": "~2.26",
     "eslint-plugin-prettier": "^4.0.0",
@@ -68,6 +68,6 @@ "mocha": "^10.0.0",
     "prettier": "^2.6.2",
-    "sucrase": "^3.28.0",
+    "sucrase": "^3.29.0",
     "test262-harness": "^10.0.0",
     "ts-interface-builder": "^0.3.3",
-    "typescript": "^4.7.3"
+    "typescript": "~4.7"
   },
@@ -74,0 +74,0 @@ "dependencies": {

New alerts

License Policy Violation

License

This package is not allowed per your license policy. Review the package's license to ensure compliance.

Found 1 instance in 1 package

Fixed alerts

License Policy Violation

License

This package is not allowed per your license policy. Review the package's license to ensure compliance.

Found 1 instance in 1 package

Improved metrics

Total package byte prevSize

1105581

increased by1.15%

Lines of code

27882

increased by1.23%

No dependency changes