A functional toolkit for authoring resource-leveling algorithms — compose constraint and scoring blocks, enumerate feasible schedules
fix(analyzeRun): exempt milestones from the E105 duration bound
serialSGS places milestones with zero span regardless of their nominal
durationDays, but analyzeRun applied the (deadline - release) < duration
bound to them. A milestone carrying an explicit duration (as MPP/JSON
files can) with a same-day release + deadline gate was reported as
LEVELSET_E105 'no feasible placement exists' — and runFromConfig threw —
for a run serialSGS places successfully.
Russ T. Fugal
(Jul 16, 2026, 2:12 AM -0600)
ee56a65b
a4981456
+25
-2
+5
-1
src/level-core/analyzeRun.ts
+5
-1
src/level-core/analyzeRun.ts
···
199
199
});
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continue;
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201
}
202
-
const duration = taskById.get(taskUniqueId)?.durationDays;
202
+
// Milestones are placed with zero span whatever their nominal duration
203
+
// (serialSGS's `task.milestone || durationDays === 0` branch), so the
204
+
// duration bound only applies to real tasks.
205
+
const task = taskById.get(taskUniqueId);
206
+
const duration = task === undefined || task.milestone ? undefined : task.durationDays;
203
207
if (duration !== undefined && deadline.day - releaseDay < duration) {
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208
issues.push({
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209
code: "LEVELSET_E105",
+20
-1
test/level-core/analyzeRun.test.ts
+20
-1
test/level-core/analyzeRun.test.ts
···
6
6
import { resolveCalendar } from "../../src/level-core/resolveCalendar.ts";
7
7
import { serialSGS } from "../../src/level-core/search/serialSGS.ts";
8
8
import type { Constraint, ResolvedProject, Scorer } from "../../src/level-core/types.ts";
9
-
import { RelationType } from "../../src/model/types.ts";
9
+
import { Duration } from "../../src/model/Duration.ts";
10
+
import { RelationType, TimeUnit } from "../../src/model/types.ts";
10
11
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12
import {
12
13
MON_JAN_5,
···
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125
},
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],
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127
},
128
+
]);
129
+
expect(analysis.ok).toBe(true);
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+
expect(analysis.issues).toHaveLength(0);
131
+
});
132
+
133
+
test("milestones are exempt from the E105 duration bound", () => {
134
+
// A milestone is placed with zero span whatever its nominal duration
135
+
// carries (serialSGS's milestone branch), so a same-day release +
136
+
// deadline pair is feasible and must not be reported as E105.
137
+
const gate = {
138
+
...makeTask({ uniqueId: 3, start: MON_JAN_5, finish: MON_JAN_5, milestone: true }),
139
+
duration: Duration.from(5, TimeUnit.Days),
140
+
};
141
+
const resolved = resolveCalendar(makeProject([gate]), {});
142
+
expect(resolved.tasks[0]!.durationDays).toBeGreaterThan(0);
143
+
const analysis = analyzeRun(resolved, [
144
+
{ kind: "Release", taskUniqueId: 3, earliestStart: 2 },
145
+
{ kind: "Deadline", taskUniqueId: 3, latestFinish: 2 },
127
146
]);
128
147
expect(analysis.ok).toBe(true);
129
148
expect(analysis.issues).toHaveLength(0);