Chris Tateandejc3 e41858c7df Compile assignment and update targets wrapped in parentheses or non-null assertions ...

TypeScript accepts parentheses and non-null assertions around the
reference an assignment, a `++`/`--` update or a for-in/of head writes
(`(x) = 1`, `h.sums[k]! += 10`), and both are erased at run time. The
compiler now reads its source files with the AstFile writeTargets option:
the writer's `left`, `operand` or `initializer` is the reference itself
and the reference's `parent` is the writer, so lowering and every analysis
of a binding's or member's writes see one shape. The reference keeps its
own source span. Files read without the option, such as type nodes from
the checker and the AST conformance tests, keep TypeScript's exact tree.

Fixes #1625

Co-authored-by: ejc3 <1694850+ejc3@users.noreply.github.com>

2026-10-21 08:58:51 -05:00

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corpus

Compile assignment and update targets wrapped in parentheses or non-null assertions

2026-10-21 08:58:51 -05:00

coverage-fixtures

Iterate generators from Symbol.asyncIterator and check return() results in for await

2026-10-20 18:16:20 -05:00

deadstrip

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diagnostics

Type empty arrays filled by later writes inside functions by their reads (#1632)

2026-10-21 04:23:15 -05:00

ffi

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fixtures

Compile the hot-shots StatsD client over UDP (#1568)

2026-10-20 21:29:48 -05:00

harness

Sort by several keys without calling a chained comparator

2026-10-21 08:31:35 -05:00

library-mode

Add the cstring class to library profiles

2026-10-17 23:40:06 -05:00

test262

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wasm-spec

Merge main

2026-10-20 17:56:44 -05:00