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feat(cli): add JSON output support for list-sessions#24690 #24711

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b236ace
feat(cli): add JSON output support for list-sessions
Khalodddd Apr 5, 2026
4423753
refactor: apply grapheme-aware truncation and remove redundant sorting
Khalodddd Apr 5, 2026
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47 changes: 27 additions & 20 deletions packages/cli/src/utils/sessions.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -9,6 +9,7 @@ import {
generateSummary,
writeToStderr,
writeToStdout,
OutputFormat,
type Config,
} from '@google/gemini-cli-core';
import {
Expand All @@ -18,37 +19,43 @@ import {
} from './sessionUtils.js';

export async function listSessions(config: Config): Promise<void> {
// Generate summary for most recent session if needed
await generateSummary(config);
// Only generate summaries for interactive display to keep JSON output clean
if (config.getOutputFormat() !== OutputFormat.JSON) {
await generateSummary(config);
}

const sessionSelector = new SessionSelector(config);
const sessions = await sessionSelector.listSessions();

if (sessions.length === 0) {
const sortedSessions = sessions.sort(
(a, b) => new Date(a.startTime).getTime() - new Date(b.startTime).getTime(),
);
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@gemini-code-assist gemini-code-assist bot Apr 5, 2026

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high

The SessionSelector.listSessions() method already returns an array of sessions sorted by startTime (ascending), as implemented in the underlying getSessionFiles utility. Re-sorting the array here is redundant and adds unnecessary complexity. You can simply use the sessions array directly.

  const sortedSessions = sessions;


if (config.getOutputFormat() === OutputFormat.JSON) {
writeToStdout(JSON.stringify(sortedSessions, null, 2) + '\n');
return;
}

if (sortedSessions.length === 0) {
writeToStdout('No previous sessions found for this project.');
return;
}

writeToStdout(
`\nAvailable sessions for this project (${sessions.length}):\n`,
`\nAvailable sessions for this project (${sortedSessions.length}):\n`,
);

sessions
.sort(
(a, b) =>
new Date(a.startTime).getTime() - new Date(b.startTime).getTime(),
)
.forEach((session, index) => {
const current = session.isCurrentSession ? ', current' : '';
const time = formatRelativeTime(session.lastUpdated);
const title =
session.displayName.length > 100
? session.displayName.slice(0, 97) + '...'
: session.displayName;
writeToStdout(
` ${index + 1}. ${title} (${time}${current}) [${session.id}]\n`,
);
});
sortedSessions.forEach((session, index) => {
const current = session.isCurrentSession ? ', current' : '';
const time = formatRelativeTime(session.lastUpdated);
const title =
session.displayName.length > 100
? session.displayName.slice(0, 97) + '...'
: session.displayName;
writeToStdout(
` ${index + 1}. ${title} (${time}${current}) [${session.id}]\n`,
);
});
}

export async function deleteSession(
Expand Down