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Early errors may result from parsing the source text of a test file, but they may also result from parsing some other source text as referenced through the ES2015 module syntax. The latter form of early error is not necessarily detectable by ECMAScript parsers, however. Because of this, the label "early" is not sufficiently precise for all Test262 consumers to correctly interpret all tests. Update the "phase" name of "early" to "parse" for all those negative tests that describe errors resulting from parsing of the file's source text directly. A forthcoming commit will update the remaining tests to use a "phase" name that is more specific to module resolution.
34 lines
1.4 KiB
JavaScript
34 lines
1.4 KiB
JavaScript
// Copyright (C) 2015 Mozilla Corporation. All rights reserved.
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// This code is governed by the BSD license found in the LICENSE file.
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/*---
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author: Jeff Walden
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es6id: 13.3.1.1
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description: >
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let: |let let| split across two lines is not subject to automatic semicolon insertion.
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info: |
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|let| followed by a name is a lexical declaration. This is so even if the
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name is on a new line. ASI applies *only* if an offending token not allowed
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by the grammar is encountered, and there's no [no LineTerminator here]
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restriction in LexicalDeclaration or ForDeclaration forbidding a line break.
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It's a tricky point, but this is true *even if* the name is "let", a name that
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can't be bound by LexicalDeclaration or ForDeclaration. Per 5.3, static
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semantics early errors are validated *after* determining productions matching
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the source text.
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So in this testcase, the eval text matches LexicalDeclaration. No ASI occurs,
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because "let\nlet = ..." matches LexicalDeclaration before static semantics
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are considered. *Then* 13.3.1.1's static semantics for the LexicalDeclaration
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just chosen, per 5.3, are validated to recognize the Script as invalid. Thus
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the eval script can't be evaluated, and a SyntaxError is thrown.
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negative:
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phase: parse
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type: SyntaxError
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---*/
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throw "Test262: This statement should not be evaluated.";
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let // start of a LexicalDeclaration, *not* an ASI opportunity
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let;
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