## [0.9.3] - 2026-03-06 - Streaming Support, request.security Fixes, Transpiler Robustness

[alaa-eddine]

Added

• array.new_box / new_label / new_line / new_linefill / new_table / new_color: Added the six missing typed array factory methods so array<box>, array<label>, etc. can be created with a proper element type. The auto-generator (scripts/generate-array-index.js) now lists them as static factory functions (called with context) rather than instance delegates. isValueOfType in array/utils.ts was extended to accept object values for these types, allowing array.push(label.new(...)) on typed arrays.
• request.security — Live Streaming Support: request.security now correctly handles live (streaming) bar updates. The secondary context is re-evaluated on each tick, and findSecContextIdx resolves the correct intra-bar index for the current live bar. Paired with drawing-object rollback (see below), streaming ticks no longer produce duplicate drawing objects.
• str.tostring Format Patterns: Added support for Pine Script's named and pattern-based format strings: "#", "#.#", "#.##", "0.00", and the format.* named constants. The formatter now applies these patterns before falling back to toString().

Fixed

• While-Loop Test Condition Hoisting (infinite-loop crash): array.size() and similar calls in a while condition were being hoisted to a temp variable outside the loop by the default CallExpression walker, making them one-shot evaluations and causing an infinite loop followed by a crash. MainTransformer now registers a WhileStatement handler and transformWhileStatement was rewritten to use a recursive walker with hoisting suppressed throughout the entire test condition.
• Array Pattern Scoping Crash: isArrayPatternVar was determined using a global (non-scoped) set in ScopeManager. A local function variable whose name happened to match an outer-scope destructured tuple element was falsely treated as an array pattern, causing a runtime crash. Fixed by adding a shape guard: the flag is only set when decl.init is a computed MemberExpression (the _tmp_0[0] pattern produced by the AnalysisPass destructuring rewrite).
• For-Loop Namespace Wrapping (math.min → $.get(math, 0).min): In the for-loop test condition walker, MemberExpression nodes unconditionally recursed into their object, causing the Identifier handler to wrap context-bound namespace objects (math, array, ta, …) with $.get(). Fixed by skipping recursion and addArrayAccess for identifiers that are the object of a MemberExpression and are context-bound namespaces.
• request.security Cross-Timeframe Value Alignment: barmerge.gaps_off / barmerge.lookahead_off were passed as strings; their truthiness caused findLTFContextIdx to take the wrong branch (returning the first intra-bar instead of the last). Fixed by converting barmerge string enums to booleans. Added normalizeTimeframe() to map non-canonical formats ('1h'→'60', '1d'→'D') so isLTF determination is correct. Fixed secondary context date-range derivation to use effectiveSDate from marketData and extend secEDate to cover the last bar's intra-bars.
• barmerge Missing from CONTEXT_BOUND_VARS: barmerge.gaps_off / barmerge.lookahead_off (used in request.security()) were not in the transpiler's context-bound list, so they were left as bare identifiers instead of being mapped to the runtime context. Added 'barmerge' to settings.ts.
• barstate.isconfirmed Wrong Bar: Was checking whether the last bar's close time equalled the session close via closeTime[length-1] (always the last bar in history) instead of the currently-executing bar. Fixed to use closeTime.data[context.idx] for correct per-bar evaluation.
• array.get() Out-of-Bounds → NaN: array.get(arr, -1) and other out-of-bounds accesses returned undefined (native JS), causing crashes when Pine Script code accessed properties (e.g., .strength) on the result. The method now returns NaN (Pine's na) for negative or out-of-range indices.
• Drawing Helpers — na Color Resolution: Drawing object helpers' _resolve() method now detects NAHelper instances and returns NaN, fixing cases where border_color=na (and similar na arguments) were silently ignored in box.new(), line.new(), etc. BoxHelper also gains a dedicated _resolveColor() that preserves NaN instead of letting it fall through an || fallback to the default color.
• Streaming Rollback for Drawing Objects: All five drawing types (box, line, label, linefill, polyline) now track a _createdAtBar property and expose a rollbackFromBar(barIndex) method. Context.rollbackDrawings() calls this during _runPaginated / updateTail to remove any drawing objects created on the current streaming bar before re-running it, preventing duplicate objects from accumulating across live ticks.