Function getTokenAtLoc

packages/expr/src/runtime.ts:246–272

(code: string, errorLoc: Position)

    return new ExpressionError(errorMessage, loc, token);
}
function getTokenAtLoc(code: string, errorLoc: Position): Token | undefined {
    const tokens = tokenizer(code, {
        ecmaVersion: 'latest',
        locations: true,
    });

    try {
        for (const token of tokens) {
            if (!token.loc) {
                continue;
            }

            const { start, end } = token.loc;

            const onSameLine = errorLoc.line === start.line;
            const inColumnRange = errorLoc.column >= start.column && errorLoc.column < end.column;

            if (onSameLine && inColumnRange) {
                return token;
            }
        }
    } catch (_error) {
        return undefined;
    }

    return undefined;
}

function isParsedExpressionStatement(
    statement: Program['body'][number]