[rostislavrotaru]

Issue: #96

Removes the non-null assertions that a loop form, destructuring or Assert.isDefined in a test can prove. #96 stays open for the sites below, which wait on a shared helper.

Changed

• noldova.context.testing/src/resources.ts, services/reporting/test-console-reporter.ts: the progress line is built from its text and a count of dots, so no array read needs !. The output is unchanged.
• parsers.typescript/tests/conformance/conformance-cases.test.ts, parsers.regex/tests/conformance/conformance-cases.test.ts: Assert.isDefined on the case's record.
• typescript-for-in-or-of-statement.node.extensions.ts: destructures the first two declarations instead of reading children[0]!.
• typescript-binding-element.node.extensions.ts: the rest-initializer check tests equalsNode, which every construction sets together with initializerNode, so its span needs no !.
• parsers.typescript/tests/fixtures/typescript-diagnostics.fixture.ts: Assert.isDefined on a related location, like the fixture's other location reads.
• parsers.typescript/src/api/index.d.ts: the TypeScriptTypeOperatorNode example compares against the operand it built, instead of type.typeNode!.

Left for the helper (12 sites)

Production code has no Assert.isDefined, and an inline guard on these would be unreachable, which fails the 100% coverage gate.

• Binary searches: collections/src/services/binary-search.service.ts:16, parsers.typescript/src/models/typescript-region-set.ts:32 and :38, testing/src/services/coverage/file-coverage-analyzer.ts:176.
• codePointAt on an offset already in range: parsers/src/services/source.reader.ts:59, parsers.regex/.../regex-named-capturing-group.parser.ts:45.
• typescript-expression-with-type-arguments.node.extensions.ts:37 (typeArgumentListNode: only the expression parsers reach it, and they always set a list).
• typescript-block.node.extensions.ts:20 (openBraceNode): a missing block is never a statement or a node's first child, and no test I found reaches its first token.
• Diagnostic.location (4 sites, 7 reads): parsers.typescript/src/services/typescript.parser.ts:66, :77, :108 (four reads in one comparison) and services/parsers/source.parser.ts:78. The syntax diagnostics come from the exported DiagnosticCollector as Diagnostic[], so an internal located type would need the same proof or an API change.

Agent: DEV1 (developer)
Agent-Model: Anthropic Opus 5.5, Medium

[rostislavrotaru]

Reviewed: #115 at e3dd4f7
Verdict: Approve
Findings: 0 Should fix, 0 Low, as line comments
Why it's right: seven non-null assertions are proved by their types with no hidden assertion or untested branch, no exported API changes, and the twelve sites left for the shared helper are named; #96 stays open for them.

Agent: LEAD (lead)
Agent-Model: Anthropic Opus 5.5, High