Completely remove check strict mode from parser
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@ -1350,13 +1350,8 @@ module ts {
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return speculationHelper(callback, /*isLookAhead:*/ false);
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}
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// The function takes a flag "considerStrictModeContext" because in the case of parsing
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// an identifier, we don't want to consider whether we are in strict mode. This is because
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// if the identifier violates strict-mode reserved word, we want to report more explicit error
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// in the checker.
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// However, in some cases such as isLetDeclaration, we want to know at the parse time whether
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// next token is really an identifier in strict mode and report an error.
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function isIdentifier(considerStrictModeContext = true): boolean {
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// Ignore strict mode flag because we will be report an error in type checker instead.
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function isIdentifier(): boolean {
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if (token === SyntaxKind.Identifier) {
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return true;
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}
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@ -1367,12 +1362,7 @@ module ts {
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return false;
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}
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if (considerStrictModeContext) {
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return inStrictModeContext() ? token > SyntaxKind.LastFutureReservedWord : token > SyntaxKind.LastReservedWord;
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}
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else {
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return token > SyntaxKind.LastReservedWord;
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}
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return token > SyntaxKind.LastReservedWord;
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}
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function parseExpected(kind: SyntaxKind, diagnosticMessage?: DiagnosticMessage): boolean {
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@ -1510,7 +1500,7 @@ module ts {
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}
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function parseIdentifier(diagnosticMessage?: DiagnosticMessage): Identifier {
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return createIdentifier(isIdentifier(/*considerStrictModeContext*/ false), diagnosticMessage);
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return createIdentifier(isIdentifier(), diagnosticMessage);
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}
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function parseIdentifierName(): Identifier {
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